Add m-esr52 at 52.6.0

1 files changed, 328 insertions, 0 deletions

diff --git a/layout/forms/nsComboboxControlFrame.h b/layout/forms/nsComboboxControlFrame.h
new file mode 100644
index 000000000..22849e8d1
--- /dev/null
+++ b/layout/forms/nsComboboxControlFrame.h
@@ -0,0 +1,328 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsComboboxControlFrame_h___
+#define nsComboboxControlFrame_h___
+
+#ifdef DEBUG_evaughan
+//#define DEBUG_rods
+#endif
+
+#ifdef DEBUG_rods
+//#define DO_REFLOW_DEBUG
+//#define DO_REFLOW_COUNTER
+//#define DO_UNCONSTRAINED_CHECK
+//#define DO_PIXELS
+//#define DO_NEW_REFLOW
+#endif
+
+//Mark used to indicate when onchange has been fired for current combobox item
+#define NS_SKIP_NOTIFY_INDEX -2
+
+#include "mozilla/Attributes.h"
+#include "nsBlockFrame.h"
+#include "nsIFormControlFrame.h"
+#include "nsIComboboxControlFrame.h"
+#include "nsIAnonymousContentCreator.h"
+#include "nsISelectControlFrame.h"
+#include "nsIRollupListener.h"
+#include "nsIStatefulFrame.h"
+#include "nsThreadUtils.h"
+
+class nsStyleContext;
+class nsIListControlFrame;
+class nsComboboxDisplayFrame;
+class nsIDOMEventListener;
+class nsIScrollableFrame;
+
+namespace mozilla {
+namespace gfx {
+class DrawTarget;
+} // namespace gfx
+} // namespace mozilla
+
+class nsComboboxControlFrame final : public nsBlockFrame,
+                                     public nsIFormControlFrame,
+                                     public nsIComboboxControlFrame,
+                                     public nsIAnonymousContentCreator,
+                                     public nsISelectControlFrame,
+                                     public nsIRollupListener,
+                                     public nsIStatefulFrame
+{
+  typedef mozilla::gfx::DrawTarget DrawTarget;
+
+public:
+  friend nsContainerFrame* NS_NewComboboxControlFrame(nsIPresShell* aPresShell,
+                                                      nsStyleContext* aContext,
+                                                      nsFrameState aFlags);
+  friend class nsComboboxDisplayFrame;
+
+  explicit nsComboboxControlFrame(nsStyleContext* aContext);
+  ~nsComboboxControlFrame();
+
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS
+
+  // nsIAnonymousContentCreator
+  virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
+  virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
+                                        uint32_t aFilter) override;
+  virtual nsIFrame* CreateFrameFor(nsIContent* aContent) override;
+
+#ifdef ACCESSIBILITY
+  virtual mozilla::a11y::AccType AccessibleType() override;
+#endif
+
+  virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
+
+  virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
+
+  virtual void Reflow(nsPresContext*           aCX,
+                      ReflowOutput&     aDesiredSize,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus&          aStatus) override;
+
+  virtual nsresult HandleEvent(nsPresContext* aPresContext,
+                               mozilla::WidgetGUIEvent* aEvent,
+                               nsEventStatus* aEventStatus) override;
+
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) override;
+
+  void PaintFocus(DrawTarget& aDrawTarget, nsPoint aPt);
+
+  // XXXbz this is only needed to prevent the quirk percent height stuff from
+  // leaking out of the combobox.  We may be able to get rid of this as more
+  // things move to IsFrameOfType.
+  virtual nsIAtom* GetType() const override;
+
+  virtual bool IsFrameOfType(uint32_t aFlags) const override
+  {
+    return nsBlockFrame::IsFrameOfType(aFlags &
+      ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
+  }
+
+  virtual nsIScrollableFrame* GetScrollTargetFrame() override {
+    return do_QueryFrame(mDropdownFrame);
+  }
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+  virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
+  virtual void SetInitialChildList(ChildListID     aListID,
+                                   nsFrameList&    aChildList) override;
+  virtual const nsFrameList& GetChildList(ChildListID aListID) const override;
+  virtual void GetChildLists(nsTArray<ChildList>* aLists) const override;
+
+  virtual nsContainerFrame* GetContentInsertionFrame() override;
+
+  // nsIFormControlFrame
+  virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue) override;
+  /**
+   * Inform the control that it got (or lost) focus.
+   * If it lost focus, the dropdown menu will be rolled up if needed,
+   * and FireOnChange() will be called.
+   * @param aOn true if got focus, false if lost focus.
+   * @param aRepaint if true then force repaint (NOTE: we always force repaint currently)
+   * @note This method might destroy |this|.
+   */
+  virtual void SetFocus(bool aOn, bool aRepaint) override;
+
+  //nsIComboboxControlFrame
+  virtual bool IsDroppedDown() override { return mDroppedDown; }
+  /**
+   * @note This method might destroy |this|.
+   */
+  virtual void ShowDropDown(bool aDoDropDown) override;
+  virtual nsIFrame* GetDropDown() override;
+  virtual void SetDropDown(nsIFrame* aDropDownFrame) override;
+  /**
+   * @note This method might destroy |this|.
+   */
+  virtual void RollupFromList() override;
+
+  /**
+   * Return the available space before and after this frame for
+   * placing the drop-down list, and the current 2D translation.
+   * Note that either or both can be less than or equal to zero,
+   * if both are then the drop-down should be closed.
+   */
+  void GetAvailableDropdownSpace(mozilla::WritingMode aWM,
+                                 nscoord* aBefore,
+                                 nscoord* aAfter,
+                                 mozilla::LogicalPoint* aTranslation);
+  virtual int32_t GetIndexOfDisplayArea() override;
+  /**
+   * @note This method might destroy |this|.
+   */
+  NS_IMETHOD RedisplaySelectedText() override;
+  virtual int32_t UpdateRecentIndex(int32_t aIndex) override;
+  virtual void OnContentReset() override;
+
+
+  bool IsOpenInParentProcess() override
+  {
+    return mIsOpenInParentProcess;
+  }
+
+  void SetOpenInParentProcess(bool aVal) override
+  {
+    mIsOpenInParentProcess = aVal;
+  }
+
+  // nsISelectControlFrame
+  NS_IMETHOD AddOption(int32_t index) override;
+  NS_IMETHOD RemoveOption(int32_t index) override;
+  NS_IMETHOD DoneAddingChildren(bool aIsDone) override;
+  NS_IMETHOD OnOptionSelected(int32_t aIndex, bool aSelected) override;
+  NS_IMETHOD OnSetSelectedIndex(int32_t aOldIndex, int32_t aNewIndex) override;
+
+  //nsIRollupListener
+  /**
+   * Hide the dropdown menu and stop capturing mouse events.
+   * @note This method might destroy |this|.
+   */
+  virtual bool Rollup(uint32_t aCount, bool aFlush,
+                      const nsIntPoint* pos, nsIContent** aLastRolledUp) override;
+  virtual void NotifyGeometryChange() override;
+
+  /**
+   * A combobox should roll up if a mousewheel event happens outside of
+   * the popup area.
+   */
+  virtual bool ShouldRollupOnMouseWheelEvent() override
+    { return true; }
+
+  virtual bool ShouldConsumeOnMouseWheelEvent() override
+    { return false; }
+
+  /**
+   * A combobox should not roll up if activated by a mouse activate message
+   * (eg. X-mouse).
+   */
+  virtual bool ShouldRollupOnMouseActivate() override
+    { return false; }
+
+  virtual uint32_t GetSubmenuWidgetChain(nsTArray<nsIWidget*> *aWidgetChain) override
+    { return 0; }
+
+  virtual nsIWidget* GetRollupWidget() override;
+
+  //nsIStatefulFrame
+  NS_IMETHOD SaveState(nsPresState** aState) override;
+  NS_IMETHOD RestoreState(nsPresState* aState) override;
+  NS_IMETHOD GenerateStateKey(nsIContent* aContent,
+                              nsIDocument* aDocument,
+                              nsACString& aKey) override;
+
+  static bool ToolkitHasNativePopup();
+
+protected:
+  friend class RedisplayTextEvent;
+  friend class nsAsyncResize;
+  friend class nsResizeDropdownAtFinalPosition;
+
+  // Utilities
+  void ReflowDropdown(nsPresContext*          aPresContext, 
+                      const ReflowInput& aReflowInput);
+
+  enum DropDownPositionState {
+    // can't show the dropdown at its current position
+    eDropDownPositionSuppressed,
+    // a resize reflow is pending, don't show it yet
+    eDropDownPositionPendingResize,
+    // the dropdown has its final size and position and can be displayed here
+    eDropDownPositionFinal
+  };
+  DropDownPositionState AbsolutelyPositionDropDown();
+
+  // Helper for GetMinISize/GetPrefISize
+  nscoord GetIntrinsicISize(nsRenderingContext* aRenderingContext,
+                            nsLayoutUtils::IntrinsicISizeType aType);
+
+  class RedisplayTextEvent : public mozilla::Runnable {
+  public:
+    NS_DECL_NSIRUNNABLE
+    explicit RedisplayTextEvent(nsComboboxControlFrame *c) : mControlFrame(c) {}
+    void Revoke() { mControlFrame = nullptr; }
+  private:
+    nsComboboxControlFrame *mControlFrame;
+  };
+  
+  /**
+   * Show or hide the dropdown list.
+   * @note This method might destroy |this|.
+   */
+  void ShowPopup(bool aShowPopup);
+
+  /**
+   * Show or hide the dropdown list.
+   * @param aShowList true to show, false to hide the dropdown.
+   * @note This method might destroy |this|.
+   * @return false if this frame is destroyed, true if still alive.
+   */
+  bool ShowList(bool aShowList);
+  void CheckFireOnChange();
+  void FireValueChangeEvent();
+  nsresult RedisplayText(int32_t aIndex);
+  void HandleRedisplayTextEvent();
+  void ActuallyDisplayText(bool aNotify);
+
+private:
+  // If our total transform to the root frame of the root document is only a 2d
+  // translation then return that translation, otherwise returns (0,0).
+  nsPoint GetCSSTransformTranslation();
+
+protected:
+  nsFrameList              mPopupFrames;             // additional named child list
+  nsCOMPtr<nsIContent>     mDisplayContent;          // Anonymous content used to display the current selection
+  nsCOMPtr<nsIContent>     mButtonContent;           // Anonymous content for the button
+  nsContainerFrame*        mDisplayFrame;            // frame to display selection
+  nsIFrame*                mButtonFrame;             // button frame
+  nsIFrame*                mDropdownFrame;           // dropdown list frame
+  nsIListControlFrame *    mListControlFrame;        // ListControl Interface for the dropdown frame
+
+  // The inline size of our display area.  Used by that frame's reflow
+  // to size to the full inline size except the drop-marker.
+  nscoord mDisplayISize;
+  
+  nsRevocableEventPtr<RedisplayTextEvent> mRedisplayTextEvent;
+
+  int32_t               mRecentSelectedIndex;
+  int32_t               mDisplayedIndex;
+  nsString              mDisplayedOptionText;
+
+  // make someone to listen to the button. If its programmatically pressed by someone like Accessibility
+  // then open or close the combo box.
+  nsCOMPtr<nsIDOMEventListener> mButtonListener;
+
+  // The last y-positions used for estimating available space before and
+  // after for the dropdown list in GetAvailableDropdownSpace.  These are
+  // reset to nscoord_MIN in AbsolutelyPositionDropDown when placing the
+  // dropdown at its actual position.  The GetAvailableDropdownSpace call
+  // from nsListControlFrame::ReflowAsDropdown use the last position.
+  nscoord               mLastDropDownBeforeScreenBCoord;
+  nscoord               mLastDropDownAfterScreenBCoord;
+  // Current state of the dropdown list, true is dropped down.
+  bool                  mDroppedDown;
+  // See comment in HandleRedisplayTextEvent().
+  bool                  mInRedisplayText;
+  // Acting on ShowDropDown(true) is delayed until we're focused.
+  bool                  mDelayedShowDropDown;
+
+  bool                  mIsOpenInParentProcess;
+
+  // static class data member for Bug 32920
+  // only one control can be focused at a time
+  static nsComboboxControlFrame* sFocused;
+
+#ifdef DO_REFLOW_COUNTER
+  int32_t mReflowId;
+#endif
+};
+
+#endif