link.cc revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 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) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/link.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "build/build_config.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 10868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/utf_string_conversions.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/accessibility/accessible_view_state.h" 12d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#include "ui/events/event.h" 13d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#include "ui/events/keycodes/keyboard_codes.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/color_utils.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/font.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/link_listener.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_AURA) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/cursor/cursor.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)const char Link::kViewClassName[] = "Link"; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Link::Link() : Label(string16()) { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Link::Link(const string16& title) : Label(title) { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Link::~Link() { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 377dbb3d5cf0c15f500944d211057644d6a2f37371Ben MurdochSkColor Link::GetDefaultEnabledColor() { 387dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#if defined(OS_WIN) 397dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return color_utils::GetSysSkColor(COLOR_HOTLIGHT); 407dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#else 417dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return SkColorSetRGB(0, 51, 153); 427dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#endif 437dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} 447dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::OnEnabledChanged() { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RecalculateFont(); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View::OnEnabledChanged(); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 50b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)const char* Link::GetClassName() const { 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return kViewClassName; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)gfx::NativeCursor Link::GetCursor(const ui::MouseEvent& event) { 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!enabled()) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return gfx::kNullCursor; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_AURA) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::kCursorHand; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_WIN) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static HCURSOR g_hand_cursor = LoadCursor(NULL, IDC_HAND); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return g_hand_cursor; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Link::HitTestRect(const gfx::Rect& rect) const { 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We need to allow clicks on the link. So we override the implementation in 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Label and use the default implementation of View. 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return View::HitTestRect(rect); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Link::OnMousePressed(const ui::MouseEvent& event) { 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!enabled() || 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (!event.IsLeftMouseButton() && !event.IsMiddleMouseButton())) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetPressed(true); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Link::OnMouseDragged(const ui::MouseEvent& event) { 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetPressed(enabled() && 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (event.IsLeftMouseButton() || event.IsMiddleMouseButton()) && 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HitTestPoint(event.location())); 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::OnMouseReleased(const ui::MouseEvent& event) { 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Change the highlight first just in case this instance is deleted 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // while calling the controller 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnMouseCaptureLost(); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enabled() && 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (event.IsLeftMouseButton() || event.IsMiddleMouseButton()) && 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HitTestPoint(event.location())) { 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Focus the link on click. 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RequestFocus(); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (listener_) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) listener_->LinkClicked(this, event.flags()); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::OnMouseCaptureLost() { 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetPressed(false); 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Link::OnKeyPressed(const ui::KeyEvent& event) { 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool activate = ((event.key_code() == ui::VKEY_SPACE) || 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (event.key_code() == ui::VKEY_RETURN)); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!activate) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetPressed(false); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Focus the link on key pressed. 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RequestFocus(); 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (listener_) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) listener_->LinkClicked(this, event.flags()); 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Link::SkipDefaultKeyEventProcessing(const ui::KeyEvent& event) { 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Make sure we don't process space or enter as accelerators. 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (event.key_code() == ui::VKEY_SPACE) || 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (event.key_code() == ui::VKEY_RETURN); 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::GetAccessibleState(ui::AccessibleViewState* state) { 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Label::GetAccessibleState(state); 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state->role = ui::AccessibilityTypes::ROLE_LINK; 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void Link::OnGestureEvent(ui::GestureEvent* event) { 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!enabled()) 1352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_TAP_DOWN) { 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetPressed(true); 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (event->type() == ui::ET_GESTURE_TAP) { 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RequestFocus(); 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (listener_) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) listener_->LinkClicked(this, event->flags()); 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetPressed(false); 1452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::SetFont(const gfx::Font& font) { 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Label::SetFont(font); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RecalculateFont(); 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::SetEnabledColor(SkColor color) { 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) requested_enabled_color_ = color; 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!pressed_) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Label::SetEnabledColor(requested_enabled_color_); 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::SetPressedColor(SkColor color) { 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) requested_pressed_color_ = color; 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (pressed_) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Label::SetEnabledColor(requested_pressed_color_); 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void Link::SetUnderline(bool underline) { 1682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (underline_ == underline) 1692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 1702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) underline_ = underline; 1712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RecalculateFont(); 1722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::Init() { 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) listener_ = NULL; 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pressed_ = false; 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) underline_ = true; 1787dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch SetEnabledColor(GetDefaultEnabledColor()); 1797dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#if defined(OS_WIN) 1807dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch SetDisabledColor(color_utils::GetSysSkColor(COLOR_WINDOWTEXT)); 1817dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch SetPressedColor(SkColorSetRGB(200, 0, 0)); 1827dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#else 1837dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // TODO(beng): source from theme provider. 1847dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch SetDisabledColor(SK_ColorBLACK); 1857dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch SetPressedColor(SK_ColorRED); 1867dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#endif 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RecalculateFont(); 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) set_focusable(true); 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::SetPressed(bool pressed) { 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (pressed_ != pressed) { 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pressed_ = pressed; 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Label::SetEnabledColor(pressed_ ? 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) requested_pressed_color_ : requested_enabled_color_); 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RecalculateFont(); 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SchedulePaint(); 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Link::RecalculateFont() { 2022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Underline the link iff it is enabled and |underline_| is true. 2032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int style = font().GetStyle(); 2042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int intended_style = (enabled() && underline_) ? 2052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (style | gfx::Font::UNDERLINE) : (style & ~gfx::Font::UNDERLINE); 2062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (style != intended_style) 2072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) Label::SetFont(font().DeriveFont(0, intended_style)); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 211