15d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Copyright 2014 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "ui/views/controls/textfield/textfield_model.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <algorithm> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/stl_util.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/clipboard/clipboard.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/clipboard/scoped_clipboard_writer.h" 1358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "ui/gfx/range/range.h" 14d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#include "ui/gfx/utf16_indexing.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace internal { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// Edit holds state information to undo/redo editing changes. Editing operations 21cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// are merged when possible, like when characters are typed in sequence. Calling 22cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// Commit() marks an edit as an independent operation that shouldn't be merged. 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Edit { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum Type { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) INSERT_EDIT, 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DELETE_EDIT, 28cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) REPLACE_EDIT, 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) virtual ~Edit() {} 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Revert the change made by this edit in |model|. 345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) void Undo(TextfieldModel* model) { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model->ModifyText(new_text_start_, new_text_end(), 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_, old_text_start_, 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_cursor_pos_); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Apply the change of this edit to the |model|. 415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) void Redo(TextfieldModel* model) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model->ModifyText(old_text_start_, old_text_end(), 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_, new_text_start_, 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos_); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 47cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Try to merge the |edit| into this edit and returns true on success. The 48cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // merged edit will be deleted after redo and should not be reused. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Merge(const Edit* edit) { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Don't merge if previous edit is DELETE. This happens when a 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // user deletes characters then hits return. In this case, the 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // delete should be treated as separate edit that can be undone 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and should not be merged with the replace edit. 54cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (type_ != DELETE_EDIT && edit->force_merge()) { 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MergeReplace(edit); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return mergeable() && edit->mergeable() && DoMerge(edit); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Commits the edit and marks as un-mergeable. 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Commit() { merge_type_ = DO_NOT_MERGE; } 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class InsertEdit; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class ReplaceEdit; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class DeleteEdit; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Edit(Type type, 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MergeType merge_type, 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_cursor_pos, 725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& old_text, 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_text_start, 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool delete_backward, 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_cursor_pos, 765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& new_text, 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_text_start) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : type_(type), 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) merge_type_(merge_type), 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_cursor_pos_(old_cursor_pos), 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_(old_text), 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_start_(old_text_start), 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete_backward_(delete_backward), 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos_(new_cursor_pos), 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_(new_text), 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_start_(new_text_start) { 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 89cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Each type of edit provides its own specific merge implementation. 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool DoMerge(const Edit* edit) = 0; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Type type() const { return type_; } 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Can this edit be merged? 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool mergeable() const { return merge_type_ == MERGEABLE; } 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Should this edit be forcibly merged with the previous edit? 98cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) bool force_merge() const { return merge_type_ == FORCE_MERGE; } 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the end index of the |old_text_|. 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_text_end() const { return old_text_start_ + old_text_.length(); } 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the end index of the |new_text_|. 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_text_end() const { return new_text_start_ + new_text_.length(); } 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 106cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Merge the replace edit into the current edit. This handles the special case 107cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // where an omnibox autocomplete string is set after a new character is typed. 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void MergeReplace(const Edit* edit) { 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK_EQ(REPLACE_EDIT, edit->type_); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK_EQ(0U, edit->old_text_start_); 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK_EQ(0U, edit->new_text_start_); 1125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 old_text = edit->old_text_; 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text.erase(new_text_start_, new_text_.length()); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text.insert(old_text_start_, old_text_); 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // SetText() replaces entire text. Set |old_text_| to the entire 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // replaced text with |this| edit undone. 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_ = old_text; 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_start_ = edit->old_text_start_; 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete_backward_ = false; 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_ = edit->new_text_; 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_start_ = edit->new_text_start_; 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) merge_type_ = DO_NOT_MERGE; 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Type type_; 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // True if the edit can be marged. 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MergeType merge_type_; 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Old cursor position. 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_cursor_pos_; 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Deleted text by this edit. 1335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 old_text_; 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The index of |old_text_|. 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_text_start_; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // True if the deletion is made backward. 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool delete_backward_; 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // New cursor position. 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_cursor_pos_; 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Added text. 1415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 new_text_; 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The index of |new_text_| 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_text_start_; 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(Edit); 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class InsertEdit : public Edit { 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 1505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) InsertEdit(bool mergeable, const base::string16& new_text, size_t at) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Edit(INSERT_EDIT, 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mergeable ? MERGEABLE : DO_NOT_MERGE, 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) at /* old cursor */, 1545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16(), 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) at, 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) false /* N/A */, 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) at + new_text.length() /* new cursor */, 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text, 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) at) { 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Edit implementation. 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool DoMerge(const Edit* edit) OVERRIDE { 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (edit->type() != INSERT_EDIT || new_text_end() != edit->new_text_start_) 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If continuous edit, merge it. 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(oshima): gtk splits edits between whitespace. Find out what 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // we want to here and implement if necessary. 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_ += edit->new_text_; 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos_ = edit->new_cursor_pos_; 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ReplaceEdit : public Edit { 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReplaceEdit(MergeType merge_type, 1785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& old_text, 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_cursor_pos, 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_text_start, 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool backward, 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_cursor_pos, 1835d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& new_text, 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_text_start) 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Edit(REPLACE_EDIT, merge_type, 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_cursor_pos, 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text, 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_start, 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backward, 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos, 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text, 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_start) { 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Edit implementation. 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool DoMerge(const Edit* edit) OVERRIDE { 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (edit->type() == DELETE_EDIT || 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_end() != edit->old_text_start_ || 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) edit->old_text_start_ != edit->new_text_start_) 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_ += edit->old_text_; 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_ += edit->new_text_; 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos_ = edit->new_cursor_pos_; 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class DeleteEdit : public Edit { 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeleteEdit(bool mergeable, 2115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& text, 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t text_start, 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool backward) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Edit(DELETE_EDIT, 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mergeable ? MERGEABLE : DO_NOT_MERGE, 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (backward ? text_start + text.length() : text_start), 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) text, 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) text_start, 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backward, 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) text_start, 2215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16(), 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) text_start) { 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Edit implementation. 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool DoMerge(const Edit* edit) OVERRIDE { 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (edit->type() != DELETE_EDIT) 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delete_backward_) { 231cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // backspace can be merged only with backspace at the same position. 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!edit->delete_backward_ || old_text_start_ != edit->old_text_end()) 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_start_ = edit->old_text_start_; 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_ = edit->old_text_ + old_text_; 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos_ = edit->new_cursor_pos_; 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 238cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // delete can be merged only with delete at the same position. 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (edit->delete_backward_ || old_text_start_ != edit->old_text_start_) 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_ += edit->old_text_; 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace internal 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)namespace { 25090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 25190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// Returns the first segment that is visually emphasized. Usually it's used for 25290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// representing the target clause (on Windows). Returns an invalid range if 25390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// there is no such a range. 25458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)gfx::Range GetFirstEmphasizedRange(const ui::CompositionText& composition) { 25590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) for (size_t i = 0; i < composition.underlines.size(); ++i) { 25690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) const ui::CompositionUnderline& underline = composition.underlines[i]; 25790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (underline.thick) 25858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return gfx::Range(underline.start_offset, underline.end_offset); 25990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 26058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return gfx::Range::InvalidRange(); 26190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 26290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 26390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} // namespace 26490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using internal::Edit; 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using internal::DeleteEdit; 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using internal::InsertEdit; 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using internal::ReplaceEdit; 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using internal::MergeType; 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using internal::DO_NOT_MERGE; 271cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using internal::FORCE_MERGE; 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using internal::MERGEABLE; 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)///////////////////////////////////////////////////////////////// 2755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// TextfieldModel: public 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 277cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)TextfieldModel::Delegate::~Delegate() {} 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2795d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)TextfieldModel::TextfieldModel(Delegate* delegate) 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : delegate_(delegate), 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_(gfx::RenderText::CreateInstance()), 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_edit_(edit_history_.end()) { 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)TextfieldModel::~TextfieldModel() { 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearEditHistory(); 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearComposition(); 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::SetText(const base::string16& new_text) { 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool changed = false; 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) { 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) changed = true; 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2965d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (text() != new_text) { 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (changed) // No need to remember composition. 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Undo(); 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_cursor = GetCursorPosition(); 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // SetText moves the cursor to the end. 3015d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t new_cursor = new_text.length(); 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SelectAll(false); 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If there is a composition text, don't merge with previous edit. 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Otherwise, force merge the edits. 305cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) ExecuteAndRecordReplace(changed ? DO_NOT_MERGE : FORCE_MERGE, 306cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) old_cursor, new_cursor, new_text, 0U); 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetCursorPosition(new_cursor); 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearSelection(); 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return changed; 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::Append(const base::string16& new_text) { 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t save = GetCursorPosition(); 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MoveCursor(gfx::LINE_BREAK, 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->GetVisualDirectionOfLogicalEnd(), 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) false); 3205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) InsertText(new_text); 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetCursorPosition(save); 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearSelection(); 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::Delete() { 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) { 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // No undo/redo for composition text. 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasSelection()) { 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeleteSelection(); 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (text().length() > GetCursorPosition()) { 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t cursor_position = GetCursorPosition(); 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t next_grapheme_index = render_text_->IndexOfAdjacentGrapheme( 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cursor_position, gfx::CURSOR_FORWARD); 33958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ExecuteAndRecordDelete(gfx::Range(cursor_position, next_grapheme_index), 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) true); 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::Backspace() { 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) { 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // No undo/redo for composition text. 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasSelection()) { 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeleteSelection(); 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t cursor_position = GetCursorPosition(); 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (cursor_position > 0) { 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Delete one code point, which may be two UTF-16 words. 3595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t previous_char = gfx::UTF16OffsetToIndex(text(), cursor_position, -1); 36058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ExecuteAndRecordDelete(gfx::Range(cursor_position, previous_char), true); 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3665d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)size_t TextfieldModel::GetCursorPosition() const { 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return render_text_->cursor_position(); 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3705d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::MoveCursor(gfx::BreakType break_type, 3715d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) gfx::VisualCursorDirection direction, 3725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool select) { 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->MoveCursor(break_type, direction, select); 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 378010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)bool TextfieldModel::MoveCursorTo(const gfx::SelectionModel& cursor) { 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) { 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // ConfirmCompositionText() updates cursor position. Need to reflect it in 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the SelectionModel parameter of MoveCursorTo(). 383010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) gfx::Range range(render_text_->selection().start(), cursor.caret_pos()); 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!range.is_empty()) 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return render_text_->SelectRange(range); 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return render_text_->MoveCursorTo( 387010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) gfx::SelectionModel(cursor.caret_pos(), cursor.caret_affinity())); 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 389010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) return render_text_->MoveCursorTo(cursor); 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3925d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::MoveCursorTo(const gfx::Point& point, bool select) { 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 395010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) gfx::SelectionModel cursor = render_text_->FindCursorPosition(point); 396010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) if (select) 397010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) cursor.set_selection_start(render_text_->selection().start()); 398010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) return render_text_->MoveCursorTo(cursor); 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4015d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)base::string16 TextfieldModel::GetSelectedText() const { 4025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return text().substr(render_text_->selection().GetMin(), 4035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) render_text_->selection().length()); 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4065d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::SelectRange(const gfx::Range& range) { 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SelectRange(range); 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::SelectSelectionModel(const gfx::SelectionModel& sel) { 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->MoveCursorTo(sel); 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::SelectAll(bool reversed) { 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SelectAll(reversed); 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::SelectWord() { 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SelectWord(); 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ClearSelection() { 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConfirmCompositionText(); 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->ClearSelection(); 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4365d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::CanUndo() { 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return edit_history_.size() && current_edit_ != edit_history_.end(); 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::CanRedo() { 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!edit_history_.size()) 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 443cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // There is no redo iff the current edit is the last element in the history. 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EditHistory::iterator iter = current_edit_; 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return iter == edit_history_.end() || // at the top. 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++iter != edit_history_.end(); 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::Undo() { 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CanUndo()) 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!HasCompositionText()); 453cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (HasCompositionText()) 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 old = text(); 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_cursor = GetCursorPosition(); 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (*current_edit_)->Commit(); 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (*current_edit_)->Undo(this); 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (current_edit_ == edit_history_.begin()) 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_edit_ = edit_history_.end(); 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_edit_--; 4655d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return old != text() || old_cursor != GetCursorPosition(); 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4685d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::Redo() { 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CanRedo()) 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!HasCompositionText()); 472cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (HasCompositionText()) 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (current_edit_ == edit_history_.end()) 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_edit_ = edit_history_.begin(); 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_edit_ ++; 4795d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 old = text(); 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_cursor = GetCursorPosition(); 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (*current_edit_)->Redo(this); 4825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return old != text() || old_cursor != GetCursorPosition(); 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::Cut() { 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!HasCompositionText() && HasSelection() && !render_text_->obscured()) { 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ui::ScopedClipboardWriter( 4884e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) ui::CLIPBOARD_TYPE_COPY_PASTE).WriteText(GetSelectedText()); 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A trick to let undo/redo handle cursor correctly. 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Undoing CUT moves the cursor to the end of the change rather 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // than beginning, unlike Delete/Backspace. 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(oshima): Change Delete/Backspace to use DeleteSelection, 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // update DeleteEdit and remove this trick. 49458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const gfx::Range& selection = render_text_->selection(); 49558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) render_text_->SelectRange(gfx::Range(selection.end(), selection.start())); 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeleteSelection(); 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::Copy() { 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!HasCompositionText() && HasSelection() && !render_text_->obscured()) { 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ui::ScopedClipboardWriter( 5054e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) ui::CLIPBOARD_TYPE_COPY_PASTE).WriteText(GetSelectedText()); 5065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::Paste() { 5125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 result; 5134e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) ui::Clipboard::GetForCurrentThread()->ReadText(ui::CLIPBOARD_TYPE_COPY_PASTE, 5144e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) &result); 515cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (result.empty()) 516cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return false; 517cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 518cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) InsertTextInternal(result, false); 519cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return true; 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::HasSelection() const { 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !render_text_->selection().is_empty(); 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::DeleteSelection() { 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!HasCompositionText()); 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(HasSelection()); 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExecuteAndRecordDelete(render_text_->selection(), false); 5305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::DeleteSelectionAndInsertTextAt( 5335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& new_text, 5345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t position) { 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExecuteAndRecordReplace(DO_NOT_MERGE, 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GetCursorPosition(), 5395d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) position + new_text.length(), 5405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) new_text, 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) position); 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5445d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)base::string16 TextfieldModel::GetTextFromRange(const gfx::Range& range) const { 5455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (range.IsValid() && range.GetMin() < text().length()) 5465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return text().substr(range.GetMin(), range.length()); 5475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return base::string16(); 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::GetTextRange(gfx::Range* range) const { 5515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) *range = gfx::Range(0, text().length()); 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::SetCompositionText( 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const ui::CompositionText& composition) { 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else if (HasSelection()) 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DeleteSelection(); 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (composition.text.empty()) 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t cursor = GetCursorPosition(); 5655d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 new_text = text(); 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetText(new_text.insert(cursor, composition.text)); 56758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) gfx::Range range(cursor, cursor + composition.text.length()); 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetCompositionRange(range); 56958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) gfx::Range emphasized_range = GetFirstEmphasizedRange(composition); 57090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (emphasized_range.IsValid()) { 57190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // This is a workaround due to the lack of support in RenderText to draw 57290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // a thick underline. In a composition returned from an IME, the segment 57390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // emphasized by a thick underline usually represents the target clause. 57490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Because the target clause is more important than the actual selection 57590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // range (or caret position) in the composition here we use a selection-like 57690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // marker instead to show this range. 577cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // TODO(yukawa, msw): Support thick underlines and remove this workaround. 57858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) render_text_->SelectRange(gfx::Range( 57990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) cursor + emphasized_range.GetMin(), 58090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) cursor + emphasized_range.GetMax())); 58190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } else if (!composition.selection.is_empty()) { 58258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) render_text_->SelectRange(gfx::Range( 58390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) cursor + composition.selection.GetMin(), 58490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) cursor + composition.selection.GetMax())); 585c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } else { 58690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) render_text_->SetCursorPosition(cursor + composition.selection.end()); 587c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 5885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ConfirmCompositionText() { 5915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(HasCompositionText()); 59258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) gfx::Range range = render_text_->GetCompositionRange(); 5935d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 composition = text().substr(range.start(), range.length()); 5945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(oshima): current behavior on ChromeOS is a bit weird and not 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // sure exactly how this should work. Find out and fix if necessary. 5965d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) AddOrMergeEditHistory(new InsertEdit(false, composition, range.start())); 5975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetCursorPosition(range.end()); 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearComposition(); 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delegate_) 6005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delegate_->OnCompositionTextConfirmedOrCleared(); 6015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::CancelCompositionText() { 6045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(HasCompositionText()); 60558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) gfx::Range range = render_text_->GetCompositionRange(); 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearComposition(); 6075d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 new_text = text(); 6085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetText(new_text.erase(range.start(), range.length())); 6095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetCursorPosition(range.start()); 6105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delegate_) 6115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delegate_->OnCompositionTextConfirmedOrCleared(); 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ClearComposition() { 61558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) render_text_->SetCompositionRange(gfx::Range::InvalidRange()); 6165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::GetCompositionTextRange(gfx::Range* range) const { 61958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) *range = gfx::Range(render_text_->GetCompositionRange()); 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::HasCompositionText() const { 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !render_text_->GetCompositionRange().is_empty(); 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ClearEditHistory() { 6275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) STLDeleteElements(&edit_history_); 6285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) current_edit_ = edit_history_.end(); 6295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 6305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)///////////////////////////////////////////////////////////////// 6325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// TextfieldModel: private 6335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::InsertTextInternal(const base::string16& new_text, 6355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool mergeable) { 6365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) { 6375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 6385d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ExecuteAndRecordInsert(new_text, mergeable); 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (HasSelection()) { 6405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExecuteAndRecordReplaceSelection(mergeable ? MERGEABLE : DO_NOT_MERGE, 6415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) new_text); 6425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 6435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ExecuteAndRecordInsert(new_text, mergeable); 6445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ReplaceTextInternal(const base::string16& new_text, 6485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool mergeable) { 6495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasCompositionText()) { 6505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CancelCompositionText(); 6515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (!HasSelection()) { 6525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t cursor = GetCursorPosition(); 6535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::SelectionModel& model = render_text_->selection_model(); 6545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // When there is no selection, the default is to replace the next grapheme 6555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // with |new_text|. So, need to find the index of next grapheme first. 6565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t next = 6575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->IndexOfAdjacentGrapheme(cursor, gfx::CURSOR_FORWARD); 6585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (next == model.caret_pos()) 6595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->MoveCursorTo(model); 6605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 66158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) render_text_->SelectRange(gfx::Range(next, model.caret_pos())); 6625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Edit history is recorded in InsertText. 6645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) InsertTextInternal(new_text, mergeable); 6655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6675d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ClearRedoHistory() { 6685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (edit_history_.begin() == edit_history_.end()) 6695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 6705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (current_edit_ == edit_history_.end()) { 6715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearEditHistory(); 6725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 6735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EditHistory::iterator delete_start = current_edit_; 6755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete_start++; 6765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STLDeleteContainerPointers(delete_start, edit_history_.end()); 6775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) edit_history_.erase(delete_start, edit_history_.end()); 6785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ExecuteAndRecordDelete(gfx::Range range, bool mergeable) { 6815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_text_start = range.GetMin(); 6825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16 old_text = text().substr(old_text_start, range.length()); 6835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool backward = range.is_reversed(); 6845d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Edit* edit = new DeleteEdit(mergeable, old_text, old_text_start, backward); 6855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool delete_edit = AddOrMergeEditHistory(edit); 6865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) edit->Redo(this); 6875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delete_edit) 6885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete edit; 6895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ExecuteAndRecordReplaceSelection( 6925d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) MergeType merge_type, 6935d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& new_text) { 6945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_text_start = render_text_->selection().GetMin(); 6955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t new_cursor_pos = new_text_start + new_text.length(); 6965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ExecuteAndRecordReplace(merge_type, 6975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GetCursorPosition(), 6985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos, 6995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text, 7005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_start); 7015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ExecuteAndRecordReplace(MergeType merge_type, 7045d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t old_cursor_pos, 7055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t new_cursor_pos, 7065d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& new_text, 7075d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t new_text_start) { 7085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t old_text_start = render_text_->selection().GetMin(); 7095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool backward = render_text_->selection().is_reversed(); 7105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Edit* edit = new ReplaceEdit(merge_type, 7115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GetSelectedText(), 7125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_cursor_pos, 7135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_text_start, 7145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backward, 7155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_cursor_pos, 7165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text, 7175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_text_start); 7185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool delete_edit = AddOrMergeEditHistory(edit); 7195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) edit->Redo(this); 7205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delete_edit) 7215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete edit; 7225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ExecuteAndRecordInsert(const base::string16& new_text, 7255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool mergeable) { 7265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Edit* edit = new InsertEdit(mergeable, new_text, GetCursorPosition()); 7275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool delete_edit = AddOrMergeEditHistory(edit); 7285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) edit->Redo(this); 7295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delete_edit) 7305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete edit; 7315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool TextfieldModel::AddOrMergeEditHistory(Edit* edit) { 7345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearRedoHistory(); 7355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (current_edit_ != edit_history_.end() && (*current_edit_)->Merge(edit)) { 737cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // If a current edit exists and has been merged with a new edit, don't add 738cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // to the history, and return true to delete |edit| after redo. 7395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 7405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) edit_history_.push_back(edit); 7425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (current_edit_ == edit_history_.end()) { 743cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // If there is no redoable edit, this is the 1st edit because RedoHistory 744cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // has been already deleted. 7455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_EQ(1u, edit_history_.size()); 7465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_edit_ = edit_history_.begin(); 7475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 7485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_edit_++; 7495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 7515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void TextfieldModel::ModifyText(size_t delete_from, 7545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t delete_to, 7555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::string16& new_text, 7565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t new_text_insert_at, 7575d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t new_cursor_pos) { 7585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_LE(delete_from, delete_to); 7595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16 old_text = text(); 7605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ClearComposition(); 7615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delete_from != delete_to) 7625d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) render_text_->SetText(old_text.erase(delete_from, delete_to - delete_from)); 7635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!new_text.empty()) 7645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) render_text_->SetText(old_text.insert(new_text_insert_at, new_text)); 7655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_text_->SetCursorPosition(new_cursor_pos); 766cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // TODO(oshima): Select text that was just undone, like Mac (but not GTK). 7675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 770