1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef UI_MESSAGE_CENTER_BOUNDED_LABEL_H_ 6#define UI_MESSAGE_CENTER_BOUNDED_LABEL_H_ 7 8#include <list> 9#include <map> 10 11#include "base/memory/scoped_ptr.h" 12#include "third_party/skia/include/core/SkColor.h" 13#include "ui/message_center/message_center_export.h" 14#include "ui/views/view.h" 15 16namespace gfx { 17class Font; 18} 19 20namespace message_center { 21 22class InnerBoundedLabel; 23 24namespace test { 25class BoundedLabelTest; 26} 27 28// BoundedLabels display left aligned text up to a maximum number of lines, with 29// ellipsis at the end of the last line for any omitted text. BoundedLabel is a 30// direct subclass of views::Views rather than a subclass of views::Label 31// to avoid exposing some of views::Label's methods that can't be made to work 32// with BoundedLabel. See the description of InnerBoundedLabel in the 33// bounded_label.cc file for details. 34class MESSAGE_CENTER_EXPORT BoundedLabel : public views::View { 35 public: 36 BoundedLabel(const string16& text, gfx::Font font); 37 BoundedLabel(const string16& text); 38 virtual ~BoundedLabel(); 39 40 void SetColors(SkColor textColor, SkColor backgroundColor); 41 void SetLineHeight(int height); // Pass in 0 for default height. 42 void SetLineLimit(int lines); // Pass in -1 for no limit. 43 44 int GetLineHeight() const; 45 int GetLineLimit() const; 46 47 // Pass in a -1 width to use the preferred width, a -1 limit to skip limits. 48 int GetLinesForWidthAndLimit(int width, int limit); 49 gfx::Size GetSizeForWidthAndLines(int width, int lines); 50 51 // Overridden from views::View. 52 virtual int GetBaseline() const OVERRIDE; 53 virtual gfx::Size GetPreferredSize() OVERRIDE; 54 virtual int GetHeightForWidth(int width) OVERRIDE; 55 virtual void Paint(gfx::Canvas* canvas) OVERRIDE; 56 virtual bool HitTestRect(const gfx::Rect& rect) const OVERRIDE; 57 virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE; 58 59 protected: 60 // Overridden from views::View. 61 virtual void OnBoundsChanged(const gfx::Rect& previous_bounds) OVERRIDE; 62 virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) OVERRIDE; 63 64 private: 65 friend class test::BoundedLabelTest; 66 67 string16 GetWrappedTextForTest(int width, int lines); 68 69 scoped_ptr<InnerBoundedLabel> label_; 70 int line_limit_; 71 72 DISALLOW_COPY_AND_ASSIGN(BoundedLabel); 73}; 74 75} // namespace message_center 76 77#endif // UI_MESSAGE_CENTER_BOUNDED_LABEL_H_ 78