forked from mirrors/gecko-dev
304 lines
9.6 KiB
C++
304 lines
9.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsFormControlFrame.h"
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#include "nsGkAtoms.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsIEventStateManager.h"
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#include "nsIScrollableView.h"
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#include "nsILookAndFeel.h"
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#include "nsIViewManager.h"
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//#define FCF_NOISY
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const PRInt32 kSizeNotSet = -1;
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nsFormControlFrame::nsFormControlFrame(nsStyleContext* aContext) :
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nsLeafFrame(aContext),
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mDidInit(PR_FALSE)
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{
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}
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nsFormControlFrame::~nsFormControlFrame()
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{
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}
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void
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nsFormControlFrame::Destroy()
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{
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// XXXldb Do we really need to do this? Shouldn't only those frames
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// that use it do it?
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nsFormControlFrame::RegUnRegAccessKey(NS_STATIC_CAST(nsIFrame*, this), PR_FALSE);
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nsLeafFrame::Destroy();
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}
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// Frames are not refcounted, no need to AddRef
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NS_IMETHODIMP
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nsFormControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_PRECONDITION(0 != aInstancePtr, "null ptr");
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(NS_GET_IID(nsIFormControlFrame))) {
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*aInstancePtr = (void*) ((nsIFormControlFrame*) this);
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return NS_OK;
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}
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return nsLeafFrame::QueryInterface(aIID, aInstancePtr);
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}
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nscoord
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nsFormControlFrame::GetIntrinsicWidth()
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{
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// Intrinsic width is 144 twips. Why? I have no idea; that's what
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// it was before I touched this code, and the original checkin
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// comment is not so helpful.
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return 144;
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}
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nscoord
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nsFormControlFrame::GetIntrinsicHeight()
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{
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// Intrinsic height is 144 twips. Why? I have no idea; that's what
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// it was before I touched this code, and the original checkin
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// comment is not so helpful.
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return 144;
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}
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NS_IMETHODIMP
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nsFormControlFrame::DidReflow(nsPresContext* aPresContext,
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const nsHTMLReflowState* aReflowState,
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nsDidReflowStatus aStatus)
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{
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nsresult rv = nsLeafFrame::DidReflow(aPresContext, aReflowState, aStatus);
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// The view is created hidden; once we have reflowed it and it has been
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// positioned then we show it.
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if (NS_FRAME_REFLOW_FINISHED == aStatus) {
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nsIView* view = GetView();
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if (view) {
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nsViewVisibility newVis = GetStyleVisibility()->IsVisible()
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? nsViewVisibility_kShow
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: nsViewVisibility_kHide;
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// only change if different.
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if (newVis != view->GetVisibility()) {
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nsIViewManager* vm = view->GetViewManager();
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if (vm) {
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vm->SetViewVisibility(view, newVis);
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}
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}
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}
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}
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return rv;
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}
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NS_IMETHODIMP
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nsFormControlFrame::SetInitialChildList(nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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return NS_OK;
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}
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NS_METHOD
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nsFormControlFrame::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsFormControlFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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if (mState & NS_FRAME_FIRST_REFLOW) {
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RegUnRegAccessKey(NS_STATIC_CAST(nsIFrame*, this), PR_TRUE);
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}
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return nsLeafFrame::Reflow(aPresContext, aDesiredSize, aReflowState,
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aStatus);
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}
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nsresult
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nsFormControlFrame::RegUnRegAccessKey(nsIFrame * aFrame, PRBool aDoReg)
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{
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NS_ENSURE_ARG_POINTER(aFrame);
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nsPresContext* presContext = aFrame->GetPresContext();
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NS_ASSERTION(presContext, "aPresContext is NULL in RegUnRegAccessKey!");
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nsAutoString accessKey;
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nsIContent* content = aFrame->GetContent();
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content->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accessKey);
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if (!accessKey.IsEmpty()) {
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nsIEventStateManager *stateManager = presContext->EventStateManager();
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if (aDoReg) {
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return stateManager->RegisterAccessKey(content, (PRUint32)accessKey.First());
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} else {
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return stateManager->UnregisterAccessKey(content, (PRUint32)accessKey.First());
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}
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}
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return NS_ERROR_FAILURE;
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}
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void
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nsFormControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
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{
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}
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NS_METHOD
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nsFormControlFrame::HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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// Check for user-input:none style
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const nsStyleUserInterface* uiStyle = GetStyleUserInterface();
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if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE ||
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uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
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return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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return NS_OK;
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}
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void
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nsFormControlFrame::GetCurrentCheckState(PRBool *aState)
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{
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nsCOMPtr<nsIDOMHTMLInputElement> inputElement = do_QueryInterface(mContent);
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if (inputElement) {
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inputElement->GetChecked(aState);
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}
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}
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nsresult
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nsFormControlFrame::SetFormProperty(nsIAtom* aName, const nsAString& aValue)
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{
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return NS_OK;
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}
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nsresult
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nsFormControlFrame::GetFormProperty(nsIAtom* aName, nsAString& aValue) const
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{
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aValue.Truncate();
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return NS_OK;
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}
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nsresult
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nsFormControlFrame::GetScreenHeight(nsPresContext* aPresContext,
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nscoord& aHeight)
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{
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nsRect screen;
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nsIDeviceContext *context = aPresContext->DeviceContext();
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PRBool dropdownCanOverlapOSBar = PR_FALSE;
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nsILookAndFeel *lookAndFeel = aPresContext->LookAndFeel();
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lookAndFeel->GetMetric(nsILookAndFeel::eMetric_MenusCanOverlapOSBar,
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dropdownCanOverlapOSBar);
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if ( dropdownCanOverlapOSBar )
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context->GetRect ( screen );
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else
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context->GetClientRect(screen);
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aHeight = aPresContext->AppUnitsToDevPixels(screen.height);
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return NS_OK;
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}
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// Calculate a frame's position in screen coordinates
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nsresult
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nsFormControlFrame::GetAbsoluteFramePosition(nsPresContext* aPresContext,
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nsIFrame *aFrame,
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nsRect& aAbsoluteTwipsRect,
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nsRect& aAbsolutePixelRect)
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{
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nsresult rv = NS_OK;
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aAbsoluteTwipsRect = aFrame->GetRect();
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// zero these out,
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// because the GetOffsetFromView figures them out
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// XXXbz why do we need to do this, really? Will we ever fail to
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// get a containing view?
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aAbsoluteTwipsRect.x = 0;
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aAbsoluteTwipsRect.y = 0;
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// Start with frame's offset from it it's containing view
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nsIView *view = nsnull;
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nsPoint frameOffset;
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rv = aFrame->GetOffsetFromView(frameOffset, &view);
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if (NS_SUCCEEDED(rv) && view) {
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aAbsoluteTwipsRect.MoveTo(frameOffset);
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nsIWidget* widget;
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// Walk up the views, looking for a widget
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do {
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// add in the offset of the view from its parent.
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aAbsoluteTwipsRect += view->GetPosition();
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widget = view->GetWidget();
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if (widget) {
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// account for space above and to the left of the view origin.
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// the widget is aligned with view's bounds, not its origin
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nsRect bounds = view->GetBounds();
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aAbsoluteTwipsRect.x -= bounds.x;
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aAbsoluteTwipsRect.y -= bounds.y;
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// Add in the absolute offset of the widget.
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nsRect absBounds;
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nsRect zeroRect;
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// XXX a twip version of this would be really nice here!
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widget->WidgetToScreen(zeroRect, absBounds);
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// Convert widget coordinates to twips
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aAbsoluteTwipsRect.x += aPresContext->DevPixelsToAppUnits(absBounds.x);
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aAbsoluteTwipsRect.y += aPresContext->DevPixelsToAppUnits(absBounds.y);
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break;
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}
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view = view->GetParent();
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} while (view);
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}
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// convert to pixel coordinates
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if (NS_SUCCEEDED(rv)) {
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aAbsolutePixelRect.x = aPresContext->AppUnitsToDevPixels(aAbsoluteTwipsRect.x);
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aAbsolutePixelRect.y = aPresContext->AppUnitsToDevPixels(aAbsoluteTwipsRect.y);
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aAbsolutePixelRect.width = aPresContext->AppUnitsToDevPixels(aAbsoluteTwipsRect.width);
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aAbsolutePixelRect.height = aPresContext->AppUnitsToDevPixels(aAbsoluteTwipsRect.height);
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}
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return rv;
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}
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