forked from mirrors/gecko-dev
470 lines
17 KiB
C++
470 lines
17 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 "nsHTMLAtoms.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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//#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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NS_IMETHODIMP
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nsFormControlFrame::Destroy(nsPresContext *aPresContext)
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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(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_FALSE);
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return nsLeafFrame::Destroy(aPresContext);
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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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void nsFormControlFrame::SetupCachedSizes(nsSize& aCacheSize,
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nscoord& aCachedAscent,
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nscoord& aCachedMaxElementWidth,
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nsHTMLReflowMetrics& aDesiredSize)
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{
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aCacheSize.width = aDesiredSize.width;
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aCacheSize.height = aDesiredSize.height;
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aCachedAscent = aDesiredSize.ascent;
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if (aDesiredSize.mComputeMEW) {
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aCachedMaxElementWidth = aDesiredSize.mMaxElementWidth;
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}
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}
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//------------------------------------------------------------
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void nsFormControlFrame::SkipResizeReflow(nsSize& aCacheSize,
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nscoord& aCachedAscent,
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nscoord& aCachedMaxElementWidth,
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nsSize& aCachedAvailableSize,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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PRBool& aBailOnWidth,
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PRBool& aBailOnHeight)
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{
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if (aReflowState.reason == eReflowReason_Incremental ||
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#ifdef IBMBIDI
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aReflowState.reason == eReflowReason_StyleChange ||
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#endif
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aReflowState.reason == eReflowReason_Dirty) {
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aBailOnHeight = PR_FALSE;
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aBailOnWidth = PR_FALSE;
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} else if (eReflowReason_Initial == aReflowState.reason) {
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aBailOnHeight = PR_FALSE;
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aBailOnWidth = PR_FALSE;
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} else {
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nscoord width;
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if (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedWidth) {
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if (aReflowState.availableWidth == NS_UNCONSTRAINEDSIZE) {
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width = NS_UNCONSTRAINEDSIZE;
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aBailOnWidth = aCacheSize.width != kSizeNotSet;
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#ifdef FCF_NOISY
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if (aBailOnWidth) {
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printf("-------------- #1 Bailing on aCachedAvailableSize.width %d != kSizeNotSet\n", aCachedAvailableSize.width);
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}
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#endif
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} else {
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width = aReflowState.availableWidth - aReflowState.mComputedBorderPadding.left -
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aReflowState.mComputedBorderPadding.right;
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aBailOnWidth = aCachedAvailableSize.width <= width && aCachedAvailableSize.width != kSizeNotSet;
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#ifdef FCF_NOISY
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if (aBailOnWidth) {
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printf("-------------- #2 Bailing on aCachedAvailableSize.width %d <= width %d\n", aCachedAvailableSize.width, width );
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} else {
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aBailOnWidth = width <= (aCacheSize.width - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right) &&
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aCachedAvailableSize.width == kSizeNotSet;
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if (aBailOnWidth) {
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printf("-------------- #2.2 Bailing on width %d <= aCachedAvailableSize.width %d\n",(aCacheSize.width - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right), width );
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}
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}
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#endif
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}
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} else {
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width = aReflowState.mComputedWidth;
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//if (aCachedAvailableSize.width == kSizeNotSet) {
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// //aBailOnWidth = aCachedAvailableSize.width == aCacheSize.width;
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aBailOnWidth = PR_FALSE;
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//} else {
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aBailOnWidth = width == (aCacheSize.width - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right);
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//}
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#ifdef FCF_NOISY
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if (aBailOnWidth) {
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printf("-------------- #3 Bailing on aCachedAvailableSize.width %d == aReflowState.mComputedWidth %d\n", aCachedAvailableSize.width, width );
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}
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#endif
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}
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nscoord height;
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if (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedHeight) {
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if (aReflowState.availableHeight == NS_UNCONSTRAINEDSIZE) {
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height = NS_UNCONSTRAINEDSIZE;
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aBailOnHeight = aCacheSize.height != kSizeNotSet;
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#ifdef FCF_NOISY
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if (aBailOnHeight) {
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printf("-------------- #1 Bailing on aCachedAvailableSize.height %d != kSizeNotSet\n", aCachedAvailableSize.height);
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}
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#endif
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} else {
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height = aReflowState.availableHeight - aReflowState.mComputedBorderPadding.left -
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aReflowState.mComputedBorderPadding.right;
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aBailOnHeight = aCachedAvailableSize.height <= height && aCachedAvailableSize.height != kSizeNotSet;
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#ifdef FCF_NOISY
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if (aBailOnHeight) {
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printf("-------------- #2 Bailing on aCachedAvailableSize.height %d <= height %d\n", aCachedAvailableSize.height, height );
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} else {
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aBailOnHeight = height <= (aCacheSize.height - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right) &&
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aCachedAvailableSize.height == kSizeNotSet;
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if (aBailOnHeight) {
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printf("-------------- #2.2 Bailing on height %d <= aCachedAvailableSize.height %d\n",(aCacheSize.height - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right), height );
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}
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}
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#endif
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}
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} else {
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height = aReflowState.mComputedHeight;
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//if (aCachedAvailableSize.height == kSizeNotSet) {
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// //aBailOnHeight = aCachedAvailableSize.height == aCacheSize.height;
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aBailOnHeight = PR_FALSE;
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//} else {
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aBailOnHeight = height == (aCacheSize.height - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right);
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//}
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#ifdef FCF_NOISY
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if (aBailOnHeight) {
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printf("-------------- #3 Bailing on aCachedAvailableSize.height %d == aReflowState.mComputedHeight %d\n", aCachedAvailableSize.height, height );
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}
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#endif
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}
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if (aBailOnWidth || aBailOnHeight) {
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aDesiredSize.width = aCacheSize.width;
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aDesiredSize.height = aCacheSize.height;
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aDesiredSize.ascent = aCachedAscent;
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aDesiredSize.descent = aDesiredSize.height - aDesiredSize.ascent;
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if (aDesiredSize.mComputeMEW) {
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aDesiredSize.mMaxElementWidth = aCachedMaxElementWidth;
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}
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}
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}
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}
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void
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nsFormControlFrame::GetDesiredSize(nsPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize)
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{
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// get the css size and let the frame use or override it
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nsSize styleSize;
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GetStyleSize(aPresContext, aReflowState, styleSize);
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// subclasses should always override this method, but if not and no css, make it small
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aDesiredSize.width = (styleSize.width > CSS_NOTSET) ? styleSize.width : 144;
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aDesiredSize.height = (styleSize.height > CSS_NOTSET) ? styleSize.height : 144;
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aDesiredSize.ascent = aDesiredSize.height;
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aDesiredSize.descent = 0;
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if (aDesiredSize.mComputeMEW) {
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aDesiredSize.SetMEWToActualWidth(aReflowState.mStylePosition->mWidth.GetUnit());
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}
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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(nsPresContext* aPresContext,
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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", aReflowState.reason);
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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if (!mDidInit) {
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RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_TRUE);
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mDidInit = PR_TRUE;
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}
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nsresult rv = nsLeafFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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aStatus = NS_FRAME_COMPLETE;
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
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aDesiredSize.mOverflowArea = nsRect(0, 0, aDesiredSize.width, aDesiredSize.height);
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FinishAndStoreOverflow(&aDesiredSize);
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return rv;
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}
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nsresult
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nsFormControlFrame::RegUnRegAccessKey(nsPresContext* aPresContext, nsIFrame * aFrame, PRBool aDoReg)
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{
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NS_ASSERTION(aPresContext, "aPresContext is NULL in RegUnRegAccessKey!");
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NS_ENSURE_ARG_POINTER(aFrame);
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nsAutoString accessKey;
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nsIContent* content = aFrame->GetContent();
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content->GetAttr(kNameSpaceID_None, nsHTMLAtoms::accesskey, accessKey);
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if (!accessKey.IsEmpty()) {
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nsIEventStateManager *stateManager = aPresContext->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::GetStyleSize(nsPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsSize& aSize)
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{
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if (aReflowState.mComputedWidth != NS_INTRINSICSIZE) {
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aSize.width = aReflowState.mComputedWidth;
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}
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else {
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aSize.width = CSS_NOTSET;
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}
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if (aReflowState.mComputedHeight != NS_INTRINSICSIZE) {
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aSize.height = aReflowState.mComputedHeight;
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}
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else {
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aSize.height = CSS_NOTSET;
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}
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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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float devUnits;
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devUnits = context->DevUnitsToAppUnits();
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aHeight = NSToIntRound(float(screen.height) / devUnits );
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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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// Get conversions between twips and pixels
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float t2p;
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float p2t;
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t2p = aPresContext->TwipsToPixels();
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p2t = aPresContext->PixelsToTwips();
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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 += NSIntPixelsToTwips(absBounds.x, p2t);
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aAbsoluteTwipsRect.y += NSIntPixelsToTwips(absBounds.y, p2t);
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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 = NSTwipsToIntPixels(aAbsoluteTwipsRect.x, t2p);
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aAbsolutePixelRect.y = NSTwipsToIntPixels(aAbsoluteTwipsRect.y, t2p);
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aAbsolutePixelRect.width = NSTwipsToIntPixels(aAbsoluteTwipsRect.width, t2p);
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aAbsolutePixelRect.height = NSTwipsToIntPixels(aAbsoluteTwipsRect.height, t2p);
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}
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return rv;
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}
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