gecko-dev/layout/forms/nsComboboxControlFrame.h

230 lines
10 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___
#include "nsAreaFrame.h"
#include "nsIFormControlFrame.h"
#include "nsIComboboxControlFrame.h"
#include "nsIDOMMouseListener.h"
#include "nsVoidArray.h"
#include "nsIAnonymousContentCreator.h"
#include "nsISelectControlFrame.h"
#include "nsIStatefulFrame.h"
#include "nsIRollupListener.h"
class nsButtonControlFrame;
class nsTextControlFrame;
class nsFormFrame;
class nsIView;
class nsStyleContext;
class nsIHTMLContent;
class nsIListControlFrame;
/**
* Child list name indices
* @see #GetAdditionalChildListName()
*/
#define NS_COMBO_FRAME_POPUP_LIST_INDEX (NS_AREA_FRAME_ABSOLUTE_LIST_INDEX + 1)
class nsComboboxControlFrame : public nsAreaFrame,
public nsIFormControlFrame,
public nsIComboboxControlFrame,
public nsIDOMMouseListener,
public nsIAnonymousContentCreator,
public nsISelectControlFrame,
public nsIStatefulFrame,
public nsIRollupListener
{
public:
nsComboboxControlFrame();
~nsComboboxControlFrame();
// nsISupports
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
// nsIAnonymousContentCreator
NS_IMETHOD CreateAnonymousContent(nsISupportsArray& aChildList);
// 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);
#ifdef NS_DEBUG
NS_IMETHOD GetFrameName(nsString& aResult) const;
#endif
NS_IMETHOD Destroy(nsIPresContext* aPresContext);
NS_IMETHOD FirstChild(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, 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 nsString& aValue);
NS_IMETHOD GetProperty(nsIAtom* aName, nsString& aValue);
void SetFocus(PRBool aOn, PRBool aRepaint);
void ScrollIntoView(nsIPresContext* aPresContext);
virtual void PostCreateWidget(nsIPresContext* aPresContext,
nscoord& aWidth,
nscoord& aHeight);
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,
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);
NS_IMETHOD UpdateSelection(PRBool aDoDispatchEvent, PRBool aForceUpdate, PRInt32 aNewIndex);
NS_IMETHOD AbsolutelyPositionDropDown();
NS_IMETHOD GetAbsoluteRect(nsRect* aRect);
// 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);
//nsIDOMEventListener
virtual nsresult MouseDown(nsIDOMEvent* aMouseEvent);
virtual nsresult MouseUp(nsIDOMEvent* aMouseEvent) { return NS_OK; }
virtual nsresult MouseClick(nsIDOMEvent* aMouseEvent) { return NS_OK; }
virtual nsresult MouseDblClick(nsIDOMEvent* aMouseEvent) { return NS_OK; }
virtual nsresult MouseOver(nsIDOMEvent* aMouseEvent) { return NS_OK; }
virtual nsresult MouseOut(nsIDOMEvent* aMouseEvent) { return NS_OK; }
virtual nsresult HandleEvent(nsIDOMEvent* aEvent) { return NS_OK; }
//nsIStatefulFrame
NS_IMETHOD GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType);
NS_IMETHOD SaveState(nsIPresContext* aPresContext, nsISupports** aState);
NS_IMETHOD RestoreState(nsIPresContext* aPresContext, nsISupports* aState);
//nsIRollupListener
NS_IMETHOD Rollup();
protected:
// nsHTMLContainerFrame
virtual PRIntn GetSkipSides() const;
// Utilities
nsresult ReflowComboChildFrame(nsIFrame* aFrame,
nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus,
nscoord aAvailableWidth,
nscoord aAvailableHeight);
nsresult GetScreenHeight(nsIPresContext* aPresContext, nscoord& aHeight);
public:
nsresult PositionDropdown(nsIPresContext* aPresContext,
nscoord aHeight,
nsRect aAbsoluteTwipsRect,
nsRect aAbsolutePixelRect);
nsresult GetAbsoluteFramePosition(nsIPresContext* aPresContext,
nsIFrame *aFrame,
nsRect& aAbsoluteTwipsRect,
nsRect& aAbsolutePixelRect);
nsIFrame* GetDisplayFrame(nsIPresContext* aPresContext);
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);
nsIFrame* GetButtonFrame(nsIPresContext* aPresContext);
nsIFrame* GetDropdownFrame();
NS_IMETHOD ToggleList(nsIPresContext* aPresContext);
NS_IMETHOD MakeSureSomethingIsSelected(nsIPresContext* aPresContext); // Default to option 0
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
nsIHTMLContent* mDisplayContent; // Anonymous content used to display the current selection
nsIHTMLContent* mButtonContent; // Anonymous content used to popup the dropdown list
PRBool 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
nsIListControlFrame * mListControlFrame; // ListControl Interface for the dropdown frame
PRBool mIgnoreFocus; // Tells the combo to ignore all focus notifications
private:
NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
};
#endif