WebCore/RenderMenuList.h

   1 /*
   2  * This file is part of the select element renderer in WebCore.
   3  *
   4  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public License
  17  * along with this library; see the file COPYING.LIB.  If not, write to
  18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #ifndef RenderMenuList_h
  24 #define RenderMenuList_h
  25
  26 #include "PopupMenuClient.h"
  27 #include "RenderFlexibleBox.h"
  28
  29 #if PLATFORM(MAC)
  30 #define POPUP_MENU_PULLS_DOWN 0
  31 #else
  32 #define POPUP_MENU_PULLS_DOWN 1
  33 #endif
  34
  35 namespace WebCore {
  36
  37 class HTMLSelectElement;
  38 class PopupMenu;
  39 class RenderText;
  40
  41 class RenderMenuList : public RenderFlexibleBox, private PopupMenuClient {
  42 public:
  43     RenderMenuList(HTMLSelectElement*);
  44     ~RenderMenuList();
  45
  46     HTMLSelectElement* selectElement();
  47
  48 private:
  49     virtual bool isMenuList() const { return true; }
  50
  51     virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0);
  52     virtual void removeChild(RenderObject*);
  53     virtual bool createsAnonymousWrapper() const { return true; }
  54     virtual bool canHaveChildren() const { return false; }
  55
  56     virtual void updateFromElement();
  57
  58     virtual bool hasControlClip() const { return true; }
  59     virtual IntRect controlClipRect(int tx, int ty) const;
  60
  61     virtual const char* renderName() const { return "RenderMenuList"; }
  62
  63     virtual void calcPrefWidths();
  64
  65 public:
  66     void hidePopup();
  67
  68     void setOptionsChanged(bool changed) { m_optionsChanged = changed; }
  69
  70     String text() const;
  71
  72     bool multiple() const;
  73
  74 private:
  75     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
  76
  77     // PopupMenuClient methods
  78     virtual String itemText(unsigned listIndex) const;
  79     virtual bool itemIsEnabled(unsigned listIndex) const;
  80     virtual PopupMenuStyle itemStyle(unsigned listIndex) const;
  81     virtual PopupMenuStyle menuStyle() const;
  82     virtual int clientInsetLeft() const;
  83     virtual int clientInsetRight() const;
  84     virtual int clientPaddingLeft() const;
  85     virtual int clientPaddingRight() const;
  86     virtual int listSize() const;
  87     virtual int selectedIndex() const;
  88     virtual bool itemIsSeparator(unsigned listIndex) const;
  89     virtual bool itemIsLabel(unsigned listIndex) const;
  90     virtual bool itemIsSelected(unsigned listIndex) const;
  91     virtual void setTextFromItem(unsigned listIndex);
  92     virtual bool valueShouldChangeOnHotTrack() const { return true; }
  93     virtual bool shouldPopOver() const { return !POPUP_MENU_PULLS_DOWN; }
  94     virtual void valueChanged(unsigned listIndex, bool fireOnChange = true);
  95     virtual FontSelector* fontSelector() const;
  96     virtual HostWindow* hostWindow() const;
  97     virtual PassRefPtr<Scrollbar> createScrollbar(ScrollbarClient*, ScrollbarOrientation, ScrollbarControlSize);
  98
  99     virtual bool hasLineIfEmpty() const { return true; }
 100
 101     Color itemBackgroundColor(unsigned listIndex) const;
 102
 103     void createInnerBlock();
 104     void adjustInnerStyle();
 105     void setText(const String&);
 106     void setTextFromOption(int optionIndex);
 107     void updateOptionsWidth();
 108
 109     RenderText* m_buttonText;
 110     RenderBlock* m_innerBlock;
 111
 112     bool m_optionsChanged;
 113     int m_optionsWidth;
 114
 115 };
 116
 117 }
 118
 119 #endif