gecko-dev/layout/forms/nsComboboxControlFrame.h
rods%netscape.com 9543ff0534 Now only doing 1 reflow for each reflow request in the ListControlFrame
for initial and full resize reflows
Bug 69869 r=kmcclusk sr=attinasi
2001-02-23 01:45:45 +00:00

295 lines
12 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#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
#include "nsAreaFrame.h"
#include "nsIFormControlFrame.h"
#include "nsIComboboxControlFrame.h"
#include "nsVoidArray.h"
#include "nsIAnonymousContentCreator.h"
#include "nsISelectControlFrame.h"
#include "nsIStatefulFrame.h"
#include "nsIRollupListener.h"
#include "nsIPresState.h"
#include "nsCSSFrameConstructor.h"
#include "nsITextContent.h"
#include "nsIScrollableViewProvider.h"
class nsFormFrame;
class nsIView;
class nsStyleContext;
class nsIHTMLContent;
class nsIListControlFrame;
class nsIScrollableView;
/**
* Child list name indices
* @see #GetAdditionalChildListName()
*/
#define NS_COMBO_FRAME_POPUP_LIST_INDEX (NS_BLOCK_FRAME_ABSOLUTE_LIST_INDEX + 1)
class nsComboboxControlFrame : public nsAreaFrame,
public nsIFormControlFrame,
public nsIComboboxControlFrame,
public nsIAnonymousContentCreator,
public nsISelectControlFrame,
public nsIStatefulFrame,
public nsIRollupListener,
public nsIScrollableViewProvider
{
public:
friend nsresult NS_NewComboboxControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRUint32 aFlags);
nsComboboxControlFrame();
~nsComboboxControlFrame();
// nsISupports
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
// nsIAnonymousContentCreator
NS_IMETHOD CreateAnonymousContent(nsIPresContext* aPresContext,
nsISupportsArray& aChildList);
NS_IMETHOD CreateFrameFor(nsIPresContext* aPresContext,
nsIContent * aContent,
nsIFrame** aFrame);
// nsIFrame
NS_IMETHOD Init(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow);
NS_IMETHOD Reflow(nsIPresContext* aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD HandleEvent(nsIPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer);
#ifdef NS_DEBUG
NS_IMETHOD GetFrameName(nsString& aResult) const;
#endif
NS_IMETHOD Destroy(nsIPresContext* aPresContext);
NS_IMETHOD FirstChild(nsIPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame** aFirstChild) const;
NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList);
NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom** aListName) const;
NS_IMETHOD GetFrameForPoint(nsIPresContext* aPresContext, const nsPoint& aPoint, nsFramePaintLayer aWhichLayer, nsIFrame** aFrame);
// nsIFormControlFrame
NS_IMETHOD SetSuggestedSize(nscoord aWidth, nscoord aHeight);
NS_IMETHOD GetName(nsString* aName);
NS_IMETHOD GetType(PRInt32* aType) const;
NS_IMETHOD SetProperty(nsIPresContext* aPresContext, nsIAtom* aName, const nsAReadableString& aValue);
NS_IMETHOD GetProperty(nsIAtom* aName, nsAWritableString& aValue);
void SetFocus(PRBool aOn, PRBool aRepaint);
void ScrollIntoView(nsIPresContext* aPresContext);
virtual void InitializeControl(nsIPresContext* aPresContext);
virtual PRBool IsSuccessful(nsIFormControlFrame* aSubmitter);
virtual void SetFormFrame(nsFormFrame* aFormFrame) { mFormFrame = aFormFrame; }
virtual void Reset(nsIPresContext* aPresContext);
virtual PRInt32 GetMaxNumValues();
virtual PRBool GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames);
NS_IMETHOD GetFont(nsIPresContext* aPresContext,
const nsFont*& aFont);
NS_IMETHOD GetFormContent(nsIContent*& aContent) const;
virtual nscoord GetVerticalBorderWidth(float aPixToTwip) const;
virtual nscoord GetHorizontalBorderWidth(float aPixToTwip) const;
virtual nscoord GetVerticalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerHeight) const;
virtual nscoord GetHorizontalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const;
virtual nsresult RequiresWidget(PRBool &aRequiresWidget);
NS_IMETHOD SelectionChanged();// Called when the selection has changed.
// If the the same item in the list is selected
// it is NOT called.
// nsIFormMouseListener
virtual void MouseClicked(nsIPresContext* aPresContext);
//nsIComboboxControlFrame
NS_IMETHOD IsDroppedDown(PRBool * aDoDropDown) { *aDoDropDown = mDroppedDown; return NS_OK; }
NS_IMETHOD ShowDropDown(PRBool aDoDropDown);
NS_IMETHOD GetDropDown(nsIFrame** aDropDownFrame);
NS_IMETHOD SetDropDown(nsIFrame* aDropDownFrame);
NS_IMETHOD ListWasSelected(nsIPresContext* aPresContext, PRBool aForceUpdate);
NS_IMETHOD UpdateSelection(PRBool aDoDispatchEvent, PRBool aForceUpdate, PRInt32 aNewIndex);
NS_IMETHOD AbsolutelyPositionDropDown();
NS_IMETHOD GetAbsoluteRect(nsRect* aRect);
NS_IMETHOD GetIndexOfDisplayArea(PRInt32* aSelectedIndex);
// nsISelectControlFrame
NS_IMETHOD AddOption(nsIPresContext* aPresContext, PRInt32 index);
NS_IMETHOD RemoveOption(nsIPresContext* aPresContext, PRInt32 index);
NS_IMETHOD SetOptionSelected(PRInt32 aIndex, PRBool aValue);
NS_IMETHOD GetOptionSelected(PRInt32 aIndex, PRBool* aValue);
NS_IMETHOD DoneAddingContent(PRBool aIsDone);
NS_IMETHOD OptionDisabled(nsIContent * aContent);
//nsIStatefulFrame
NS_IMETHOD GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType);
NS_IMETHOD SaveState(nsIPresContext* aPresContext, nsIPresState** aState);
NS_IMETHOD RestoreState(nsIPresContext* aPresContext, nsIPresState* aState);
//nsIRollupListener
// NS_DECL_NSIROLLUPLISTENER
NS_IMETHOD Rollup();
// a combobox should roll up if a mousewheel event happens outside of
// the popup area
NS_IMETHOD ShouldRollupOnMouseWheelEvent(PRBool *aShouldRollup)
{ *aShouldRollup = PR_TRUE; return NS_OK;}
//NS_IMETHOD ShouldRollupOnMouseWheelEvent(nsIWidget *aWidget, PRBool *aShouldRollup)
//{ *aShouldRollup = PR_FALSE; return NS_OK;}
NS_IMETHOD SetFrameConstructor(nsCSSFrameConstructor *aConstructor)
{ mFrameConstructor = aConstructor; return NS_OK;} // not owner - do not addref!
// nsIScrollableViewProvider
NS_IMETHOD GetScrollableView(nsIScrollableView** aView);
protected:
NS_IMETHOD CreateDisplayFrame(nsIPresContext* aPresContext);
#ifdef DO_NEW_REFLOW
NS_IMETHOD ReflowItems(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize);
#endif
// nsHTMLContainerFrame
virtual PRIntn GetSkipSides() const;
// Utilities
nsresult ReflowComboChildFrame(nsIFrame* aFrame,
nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus,
nscoord aAvailableWidth,
nscoord aAvailableHeight);
public:
nsresult PositionDropdown(nsIPresContext* aPresContext,
nscoord aHeight,
nsRect aAbsoluteTwipsRect,
nsRect aAbsolutePixelRect);
protected:
void ShowPopup(PRBool aShowPopup);
void ShowList(nsIPresContext* aPresContext, PRBool aShowList);
void SetChildFrameSize(nsIFrame* aFrame, nscoord aWidth, nscoord aHeight);
void InitTextStr(nsIPresContext* aPresContext, PRBool aUpdate);
nsresult GetPrimaryComboFrame(nsIPresContext* aPresContext, nsIContent* aContent, nsIFrame** aFrame);
NS_IMETHOD ToggleList(nsIPresContext* aPresContext);
NS_IMETHOD MakeSureSomethingIsSelected(nsIPresContext* aPresContext); // Default to option 0
void ReflowCombobox(nsIPresContext * aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize,
nsReflowStatus& aStatus,
nsIFrame * aDisplayFrame,
nsIFrame * aDropDownBtn,
nscoord& aDisplayWidth,
nscoord aBtnWidth,
const nsMargin& aBorderPadding,
nscoord aFallBackHgt = -1,
PRBool aCheckHeight = PR_FALSE);
nsFrameList mPopupFrames; // additional named child list
nsIPresContext* mPresContext; // XXX: Remove the need to cache the pres context.
nsFormFrame* mFormFrame; // Parent Form Frame
nsString mTextStr; // Current Combo box selection
PRInt32 mSelectedIndex; // current selected index
nsCOMPtr<nsITextContent> mDisplayContent; // Anonymous content used to display the current selection
PRPackedBool mDroppedDown; // Current state of the dropdown list, PR_TRUE is dropped down
nsIFrame* mDisplayFrame; // frame to display selection
nsIFrame* mButtonFrame; // button frame
nsIFrame* mDropdownFrame; // dropdown list frame
nsIFrame* mTextFrame; // display area frame
nsIListControlFrame * mListControlFrame; // ListControl Interface for the dropdown frame
nsCOMPtr<nsIPresState> mPresState; // Need cache state when list is null
// Resize Reflow Optimization
nsSize mCacheSize;
nsSize mCachedMaxElementSize;
nsSize mCachedAvailableSize;
nsSize mCachedUncDropdownSize;
nsSize mCachedUncComboSize;
nscoord mItemDisplayWidth;
//nscoord mItemDisplayHeight;
nsCSSFrameConstructor* mFrameConstructor;
PRPackedBool mGoodToGo;
// static class data member for Bug 32920
// only one control can be focused at a time
static nsComboboxControlFrame * mFocused;
static nscoord mCachedScrollbarWidth;
#ifdef DO_REFLOW_COUNTER
PRInt32 mReflowId;
#endif
private:
NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
};
#endif