michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: // This defines a common base class for nsITheme implementations, to reduce
michael@0: // code duplication.
michael@0: 
michael@0: #include "nsAlgorithm.h"
michael@0: #include "nsIAtom.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsString.h"
michael@0: #include "nsMargin.h"
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsTArray.h"
michael@0: #include "nsITimer.h"
michael@0: #include "nsIContent.h"
michael@0: 
michael@0: class nsIFrame;
michael@0: class nsIPresShell;
michael@0: class nsPresContext;
michael@0: 
michael@0: namespace mozilla {
michael@0: class EventStates;
michael@0: } // namespace mozilla
michael@0: 
michael@0: class nsNativeTheme : public nsITimerCallback
michael@0: {
michael@0:  protected:
michael@0: 
michael@0:   NS_DECL_ISUPPORTS
michael@0:   NS_DECL_NSITIMERCALLBACK
michael@0: 
michael@0:   enum ScrollbarButtonType {
michael@0:     eScrollbarButton_UpTop   = 0,
michael@0:     eScrollbarButton_Down    = 1 << 0,
michael@0:     eScrollbarButton_Bottom  = 1 << 1
michael@0:   };
michael@0: 
michael@0:   enum TreeSortDirection {
michael@0:     eTreeSortDirection_Descending,
michael@0:     eTreeSortDirection_Natural,
michael@0:     eTreeSortDirection_Ascending
michael@0:   };
michael@0: 
michael@0:   nsNativeTheme();
michael@0:   virtual ~nsNativeTheme() {}
michael@0: 
michael@0:   // Returns the content state (hover, focus, etc), see EventStateManager.h
michael@0:   mozilla::EventStates GetContentState(nsIFrame* aFrame, uint8_t aWidgetType);
michael@0: 
michael@0:   // Returns whether the widget is already styled by content
michael@0:   // Normally called from ThemeSupportsWidget to turn off native theming
michael@0:   // for elements that are already styled.
michael@0:   bool IsWidgetStyled(nsPresContext* aPresContext, nsIFrame* aFrame,
michael@0:                         uint8_t aWidgetType);                                              
michael@0: 
michael@0:   // Accessors to widget-specific state information
michael@0: 
michael@0:   bool IsDisabled(nsIFrame* aFrame, mozilla::EventStates aEventStates);
michael@0: 
michael@0:   // RTL chrome direction
michael@0:   bool IsFrameRTL(nsIFrame* aFrame);
michael@0: 
michael@0:   bool IsHTMLContent(nsIFrame *aFrame);
michael@0:   
michael@0:   // button:
michael@0:   bool IsDefaultButton(nsIFrame* aFrame) {
michael@0:     return CheckBooleanAttr(aFrame, nsGkAtoms::_default);
michael@0:   }
michael@0: 
michael@0:   bool IsButtonTypeMenu(nsIFrame* aFrame);
michael@0: 
michael@0:   // checkbox:
michael@0:   bool IsChecked(nsIFrame* aFrame) {
michael@0:     return GetCheckedOrSelected(aFrame, false);
michael@0:   }
michael@0: 
michael@0:   // radiobutton:
michael@0:   bool IsSelected(nsIFrame* aFrame) {
michael@0:     return GetCheckedOrSelected(aFrame, true);
michael@0:   }
michael@0: 
michael@0:   bool IsFocused(nsIFrame* aFrame) {
michael@0:     return CheckBooleanAttr(aFrame, nsGkAtoms::focused);
michael@0:   }
michael@0: 
michael@0:   // scrollbar button:
michael@0:   int32_t GetScrollbarButtonType(nsIFrame* aFrame);
michael@0: 
michael@0:   // tab:
michael@0:   bool IsSelectedTab(nsIFrame* aFrame) {
michael@0:     return CheckBooleanAttr(aFrame, nsGkAtoms::selected);
michael@0:   }
michael@0:   
michael@0:   bool IsNextToSelectedTab(nsIFrame* aFrame, int32_t aOffset);
michael@0:   
michael@0:   bool IsBeforeSelectedTab(nsIFrame* aFrame) {
michael@0:     return IsNextToSelectedTab(aFrame, -1);
michael@0:   }
michael@0:   
michael@0:   bool IsAfterSelectedTab(nsIFrame* aFrame) {
michael@0:     return IsNextToSelectedTab(aFrame, 1);
michael@0:   }
michael@0: 
michael@0:   bool IsLeftToSelectedTab(nsIFrame* aFrame) {
michael@0:     return IsFrameRTL(aFrame) ? IsAfterSelectedTab(aFrame) : IsBeforeSelectedTab(aFrame);
michael@0:   }
michael@0: 
michael@0:   bool IsRightToSelectedTab(nsIFrame* aFrame) {
michael@0:     return IsFrameRTL(aFrame) ? IsBeforeSelectedTab(aFrame) : IsAfterSelectedTab(aFrame);
michael@0:   }
michael@0: 
michael@0:   // button / toolbarbutton:
michael@0:   bool IsCheckedButton(nsIFrame* aFrame) {
michael@0:     return CheckBooleanAttr(aFrame, nsGkAtoms::checked);
michael@0:   }
michael@0: 
michael@0:   bool IsSelectedButton(nsIFrame* aFrame) {
michael@0:     return CheckBooleanAttr(aFrame, nsGkAtoms::checked) ||
michael@0:            CheckBooleanAttr(aFrame, nsGkAtoms::selected);
michael@0:   }
michael@0: 
michael@0:   bool IsOpenButton(nsIFrame* aFrame) {
michael@0:     return CheckBooleanAttr(aFrame, nsGkAtoms::open);
michael@0:   }
michael@0: 
michael@0:   bool IsPressedButton(nsIFrame* aFrame);
michael@0: 
michael@0:   // treeheadercell:
michael@0:   TreeSortDirection GetTreeSortDirection(nsIFrame* aFrame);
michael@0:   bool IsLastTreeHeaderCell(nsIFrame* aFrame);
michael@0: 
michael@0:   // tab:
michael@0:   bool IsBottomTab(nsIFrame* aFrame);
michael@0:   bool IsFirstTab(nsIFrame* aFrame);
michael@0:   
michael@0:   bool IsHorizontal(nsIFrame* aFrame);
michael@0: 
michael@0:   // progressbar:
michael@0:   bool IsIndeterminateProgress(nsIFrame* aFrame,
michael@0:                                mozilla::EventStates aEventStates);
michael@0:   bool IsVerticalProgress(nsIFrame* aFrame);
michael@0: 
michael@0:   // meter:
michael@0:   bool IsVerticalMeter(nsIFrame* aFrame);
michael@0: 
michael@0:   // textfield:
michael@0:   bool IsReadOnly(nsIFrame* aFrame) {
michael@0:       return CheckBooleanAttr(aFrame, nsGkAtoms::readonly);
michael@0:   }
michael@0: 
michael@0:   // menupopup:
michael@0:   bool IsSubmenu(nsIFrame* aFrame, bool* aLeftOfParent);
michael@0: 
michael@0:   // True if it's not a menubar item or menulist item
michael@0:   bool IsRegularMenuItem(nsIFrame *aFrame);
michael@0: 
michael@0:   bool IsMenuListEditable(nsIFrame *aFrame);
michael@0: 
michael@0:   nsIPresShell *GetPresShell(nsIFrame* aFrame);
michael@0:   static bool CheckBooleanAttr(nsIFrame* aFrame, nsIAtom* aAtom);
michael@0:   static int32_t CheckIntAttr(nsIFrame* aFrame, nsIAtom* aAtom, int32_t defaultValue);
michael@0: 
michael@0:   // Helpers for progressbar.
michael@0:   static double GetProgressValue(nsIFrame* aFrame);
michael@0:   static double GetProgressMaxValue(nsIFrame* aFrame);
michael@0: 
michael@0:   bool GetCheckedOrSelected(nsIFrame* aFrame, bool aCheckSelected);
michael@0:   bool GetIndeterminate(nsIFrame* aFrame);
michael@0: 
michael@0:   bool QueueAnimatedContentForRefresh(nsIContent* aContent,
michael@0:                                         uint32_t aMinimumFrameRate);
michael@0: 
michael@0:   nsIFrame* GetAdjacentSiblingFrameWithSameAppearance(nsIFrame* aFrame,
michael@0:                                                       bool aNextSibling);
michael@0: 
michael@0:   bool IsRangeHorizontal(nsIFrame* aFrame);
michael@0: 
michael@0:   // scrollbar
michael@0:   bool IsDarkBackground(nsIFrame* aFrame);
michael@0: 
michael@0:  private:
michael@0:   uint32_t mAnimatedContentTimeout;
michael@0:   nsCOMPtr<nsITimer> mAnimatedContentTimer;
michael@0:   nsAutoTArray<nsCOMPtr<nsIContent>, 20> mAnimatedContentList;
michael@0: };