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Mozilla/mozilla/layout/forms/nsListControlFrame.h
bzbarsky%mit.edu f53f98f7f3 Create an api for easily converting between the coordinate systems of two 
frames or two views.  Use this to fix the auto-positioning of abs pos boxes to
work no matter how their containing block and the block their placeholder lives
in are related, and convert various other callers to the new API.  Bug 266968,
r+sr=roc


git-svn-id: svn://10.0.0.236/trunk@164857 18797224-902f-48f8-a5cc-f745e15eee43
2004-11-03 16:16:57 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsListControlFrame_h___
#define nsListControlFrame_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
#endif
#include "nsGfxScrollFrame.h"
#include "nsIFormControlFrame.h"
#include "nsIListControlFrame.h"
#include "nsISelectControlFrame.h"
#include "nsIDOMEventListener.h"
#include "nsIPresState.h"
#include "nsIContent.h"
#include "nsAutoPtr.h"
class nsIDOMHTMLSelectElement;
class nsIDOMHTMLOptionsCollection;
class nsIDOMHTMLOptionElement;
class nsIComboboxControlFrame;
class nsIViewManager;
class nsPresContext;
class nsVoidArray;
class nsIScrollableView;
class nsVoidArray;
class nsListEventListener;
/**
* Frame-based listbox.
*/
class nsListControlFrame : public nsHTMLScrollFrame,
public nsIFormControlFrame,
public nsIListControlFrame,
public nsISelectControlFrame
{
public:
friend nsresult NS_NewListControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
// nsISupports
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
// nsIFrame
NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD SetInitialChildList(nsPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList);
NS_IMETHOD Reflow(nsPresContext* aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD Init(nsPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsStyleContext* aContext,
nsIFrame* aPrevInFlow);
NS_IMETHOD DidReflow(nsPresContext* aPresContext,
const nsHTMLReflowState* aReflowState,
nsDidReflowStatus aStatus);
NS_IMETHOD Destroy(nsPresContext *aPresContext);
NS_IMETHOD Paint(nsPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer,
PRUint32 aFlags = 0);
virtual nsIFrame* GetContentInsertionFrame();
/**
* Get the "type" of the frame
*
* @see nsLayoutAtoms::scrollFrame
*/
virtual nsIAtom* GetType() const;
#ifdef DEBUG
// nsIFrameDebug
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
// nsIFormControlFrame
NS_IMETHOD_(PRInt32) GetFormControlType() const;
NS_IMETHOD GetName(nsAString* aName);
NS_IMETHOD SetProperty(nsPresContext* aPresContext, nsIAtom* aName, const nsAString& aValue);
NS_IMETHOD GetProperty(nsIAtom* aName, nsAString& aValue);
NS_IMETHOD GetMultiple(PRBool* aResult, nsIDOMHTMLSelectElement* aSelect = nsnull);
NS_IMETHOD GetFormContent(nsIContent*& aContent) const;
NS_IMETHOD OnContentReset();
virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
virtual void ScrollIntoView(nsPresContext* aPresContext);
virtual void MouseClicked(nsPresContext* aPresContext);
virtual nscoord GetVerticalInsidePadding(nsPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerHeight) const;
virtual nscoord GetHorizontalInsidePadding(nsPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const;
virtual nsGfxScrollFrameInner::ScrollbarStyles GetScrollbarStyles() const;
// for accessibility purposes
#ifdef ACCESSIBILITY
NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
#endif
// nsHTMLContainerFrame
virtual PRIntn GetSkipSides() const;
// nsIListControlFrame
NS_IMETHOD SetComboboxFrame(nsIFrame* aComboboxFrame);
NS_IMETHOD GetSelectedIndex(PRInt32* aIndex);
NS_IMETHOD GetOptionText(PRInt32 aIndex, nsAString & aStr);
NS_IMETHOD CaptureMouseEvents(nsPresContext* aPresContext, PRBool aGrabMouseEvents);
NS_IMETHOD GetMaximumSize(nsSize &aSize);
NS_IMETHOD SetSuggestedSize(nscoord aWidth, nscoord aHeight);
NS_IMETHOD GetNumberOfOptions(PRInt32* aNumOptions);
NS_IMETHOD SyncViewWithFrame(nsPresContext* aPresContext);
NS_IMETHOD AboutToDropDown();
NS_IMETHOD AboutToRollup();
NS_IMETHOD UpdateSelection();
NS_IMETHOD SetOverrideReflowOptimization(PRBool aValue) { mOverrideReflowOpt = aValue; return NS_OK; }
NS_IMETHOD GetOptionsContainer(nsPresContext* aPresContext, nsIFrame** aFrame);
NS_IMETHOD FireOnChange();
NS_IMETHOD ComboboxFinish(PRInt32 aIndex);
// nsISelectControlFrame
NS_IMETHOD AddOption(nsPresContext* aPresContext, PRInt32 index);
NS_IMETHOD RemoveOption(nsPresContext* aPresContext, PRInt32 index);
NS_IMETHOD GetOptionSelected(PRInt32 aIndex, PRBool* aValue);
NS_IMETHOD DoneAddingChildren(PRBool aIsDone);
NS_IMETHOD OnOptionSelected(nsPresContext* aPresContext,
PRInt32 aIndex,
PRBool aSelected);
NS_IMETHOD OnOptionTextChanged(nsIDOMHTMLOptionElement* option);
NS_IMETHOD GetDummyFrame(nsIFrame** aFrame);
NS_IMETHOD SetDummyFrame(nsIFrame* aFrame);
// mouse event listeners
nsresult MouseDown(nsIDOMEvent* aMouseEvent);
nsresult MouseUp(nsIDOMEvent* aMouseEvent);
// mouse motion listeners
nsresult MouseMove(nsIDOMEvent* aMouseEvent);
nsresult DragMove(nsIDOMEvent* aMouseEvent);
// key listeners
nsresult KeyPress(nsIDOMEvent* aKeyEvent);
// Static Methods
static nsIDOMHTMLSelectElement* GetSelect(nsIContent * aContent);
static nsIDOMHTMLOptionsCollection* GetOptions(nsIContent * aContent, nsIDOMHTMLSelectElement* aSelect = nsnull);
static nsIDOMHTMLOptionElement* GetOption(nsIDOMHTMLOptionsCollection* aOptions, PRInt32 aIndex);
static nsIContent* GetOptionAsContent(nsIDOMHTMLOptionsCollection* aCollection,PRInt32 aIndex);
static void ComboboxFocusSet();
// Helper
void SetPassId(PRInt16 aId) { mPassId = aId; }
void PaintFocus(nsIRenderingContext& aRC, nsFramePaintLayer aWhichLayer);
#ifdef ACCESSIBILITY
void FireMenuItemActiveEvent(); // Inform assistive tech what got focused
#endif
protected:
void DropDownToggleKey(nsIDOMEvent* aKeyEvent);
nsresult IsOptionDisabled(PRInt32 anIndex, PRBool &aIsDisabled);
nsresult ScrollToFrame(nsIContent * aOptElement);
nsresult ScrollToIndex(PRInt32 anIndex);
PRBool IsClickingInCombobox(nsIDOMEvent* aMouseEvent);
void AdjustIndexForDisabledOpt(PRInt32 aStartIndex, PRInt32 &anNewIndex,
PRInt32 aNumOptions, PRInt32 aDoAdjustInc, PRInt32 aDoAdjustIncNext);
virtual void ResetList(PRBool aAllowScrolling);
nsListControlFrame(nsIPresShell* aShell, nsIDocument* aDocument);
virtual ~nsListControlFrame();
// Utility methods
nsresult GetSizeAttribute(PRInt32 *aSize);
nsIContent* GetOptionFromContent(nsIContent *aContent);
nsresult GetIndexFromDOMEvent(nsIDOMEvent* aMouseEvent, PRInt32& aCurIndex);
nsIContent* GetOptionContent(PRInt32 aIndex);
PRBool IsContentSelected(nsIContent* aContent);
PRBool IsContentSelectedByIndex(PRInt32 aIndex);
PRBool IsOptionElement(nsIContent* aContent);
PRBool CheckIfAllFramesHere();
PRInt32 GetIndexFromContent(nsIContent *aContent);
PRBool IsLeftButton(nsIDOMEvent* aMouseEvent);
// Dropped down stuff
void SetComboboxItem(PRInt32 aIndex);
PRBool IsInDropDownMode() const;
// Selection
PRBool SetOptionsSelectedFromFrame(PRInt32 aStartIndex,
PRInt32 aEndIndex,
PRBool aValue,
PRBool aClearAll);
PRBool ToggleOptionSelectedFromFrame(PRInt32 aIndex);
PRBool SingleSelection(PRInt32 aClickedIndex, PRBool aDoToggle);
PRBool ExtendedSelection(PRInt32 aStartIndex, PRInt32 aEndIndex,
PRBool aClearAll);
PRBool PerformSelection(PRInt32 aClickedIndex, PRBool aIsShift,
PRBool aIsControl);
PRBool HandleListSelection(nsIDOMEvent * aDOMEvent, PRInt32 selectedIndex);
void InitSelectionRange(PRInt32 aClickedIndex);
// Data Members
PRInt32 mStartSelectionIndex;
PRInt32 mEndSelectionIndex;
nsIComboboxControlFrame *mComboboxFrame;
PRPackedBool mChangesSinceDragStart;
PRPackedBool mButtonDown;
nscoord mMaxWidth;
nscoord mMaxHeight;
PRInt32 mNumDisplayRows;
PRBool mIsAllContentHere;
PRPackedBool mIsAllFramesHere;
PRPackedBool mHasBeenInitialized;
PRPackedBool mNeedToReset;
PRPackedBool mPostChildrenLoadedReset;
PRPackedBool mOverrideReflowOpt;
nsRefPtr<nsListEventListener> mEventListener;
PRInt16 mPassId;
nscoord mCachedDesiredMEW;
nsIFrame* mDummyFrame;
//Resize Reflow OpitmizationSize;
nsSize mCacheSize;
nscoord mCachedAscent;
nscoord mCachedMaxElementWidth;
nsSize mCachedUnconstrainedSize;
nsSize mCachedAvailableSize;
static nsListControlFrame * mFocused;
#ifdef DO_REFLOW_COUNTER
PRInt32 mReflowId;
#endif
private:
NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
// for incremental typing navigation
static nsAString& GetIncrementalString ();
static DOMTimeStamp gLastKeyTime;
};
#endif /* nsListControlFrame_h___ */
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