forked from mirrors/gecko-dev
334 lines
11 KiB
C++
334 lines
11 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 "nsGfxButtonControlFrame.h"
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#include "nsWidgetsCID.h"
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#include "nsIFontMetrics.h"
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#include "nsFormControlFrame.h"
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#include "nsIFormControl.h"
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#include "nsINameSpaceManager.h"
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#ifdef ACCESSIBILITY
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#include "nsIAccessibilityService.h"
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#endif
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#include "nsIServiceManager.h"
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#include "nsIDOMNode.h"
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#include "nsGkAtoms.h"
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#include "nsAutoPtr.h"
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#include "nsStyleSet.h"
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#include "nsContentUtils.h"
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// MouseEvent suppression in PP
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#include "nsGUIEvent.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsNodeInfoManager.h"
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#include "nsIDOMHTMLInputElement.h"
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const nscoord kSuggestedNotSet = -1;
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nsGfxButtonControlFrame::nsGfxButtonControlFrame(nsStyleContext* aContext):
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nsHTMLButtonControlFrame(aContext)
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{
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}
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nsIFrame*
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NS_NewGfxButtonControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsGfxButtonControlFrame(aContext);
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}
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void nsGfxButtonControlFrame::Destroy()
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{
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nsContentUtils::DestroyAnonymousContent(&mTextContent);
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nsHTMLButtonControlFrame::Destroy();
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}
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nsIAtom*
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nsGfxButtonControlFrame::GetType() const
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{
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return nsGkAtoms::gfxButtonControlFrame;
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}
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// Special check for the browse button of a file input.
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//
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// We'll return PR_TRUE if type is NS_FORM_INPUT_BUTTON and our parent
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// is a file input.
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PRBool
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nsGfxButtonControlFrame::IsFileBrowseButton(PRInt32 type)
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{
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PRBool rv = PR_FALSE;
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if (NS_FORM_INPUT_BUTTON == type) {
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// Check to see if parent is a file input
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nsCOMPtr<nsIFormControl> formCtrl =
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do_QueryInterface(mContent->GetParent());
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rv = formCtrl && formCtrl->GetType() == NS_FORM_INPUT_FILE;
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}
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return rv;
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}
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#ifdef DEBUG
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NS_IMETHODIMP
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nsGfxButtonControlFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("ButtonControl"), aResult);
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}
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#endif
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// Create the text content used as label for the button.
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// The frame will be generated by the frame constructor.
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nsresult
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nsGfxButtonControlFrame::CreateAnonymousContent(nsTArray<nsIContent*>& aElements)
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{
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nsXPIDLString label;
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GetLabel(label);
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// Add a child text content node for the label
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NS_NewTextNode(getter_AddRefs(mTextContent),
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mContent->NodeInfo()->NodeInfoManager());
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if (!mTextContent)
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return NS_ERROR_OUT_OF_MEMORY;
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// set the value of the text node and add it to the child list
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mTextContent->SetText(label, PR_FALSE);
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if (!aElements.AppendElement(mTextContent))
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return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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// Create the text content used as label for the button.
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// The frame will be generated by the frame constructor.
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nsIFrame*
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nsGfxButtonControlFrame::CreateFrameFor(nsIContent* aContent)
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{
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nsIFrame * newFrame = nsnull;
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if (aContent == mTextContent) {
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nsIFrame * parentFrame = mFrames.FirstChild();
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nsPresContext* presContext = PresContext();
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nsRefPtr<nsStyleContext> textStyleContext;
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textStyleContext = presContext->StyleSet()->
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ResolveStyleForNonElement(mStyleContext);
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if (textStyleContext) {
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newFrame = NS_NewTextFrame(presContext->PresShell(), textStyleContext);
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if (newFrame) {
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// initialize the text frame
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newFrame->Init(mTextContent, parentFrame, nsnull);
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newFrame->SetInitialChildList(nsnull, nsnull);
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}
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}
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}
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return newFrame;
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}
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nsresult
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nsGfxButtonControlFrame::GetFormProperty(nsIAtom* aName, nsAString& aValue) const
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{
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nsresult rv = NS_OK;
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if (nsGkAtoms::defaultLabel == aName) {
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// This property is used by accessibility to get
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// the default label of the button.
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nsXPIDLString temp;
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rv = const_cast<nsGfxButtonControlFrame*>(this)->GetDefaultLabel(temp);
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aValue = temp;
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} else {
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aValue.Truncate();
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}
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return rv;
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}
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#ifdef ACCESSIBILITY
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NS_IMETHODIMP nsGfxButtonControlFrame::GetAccessible(nsIAccessible** aAccessible)
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{
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nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
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if (accService) {
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return accService->CreateHTMLButtonAccessible(static_cast<nsIFrame*>(this), aAccessible);
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}
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return NS_ERROR_FAILURE;
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}
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#endif
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// Frames are not refcounted, no need to AddRef
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NS_IMETHODIMP
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nsGfxButtonControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_PRECONDITION(aInstancePtr, "null out param");
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if (aIID.Equals(NS_GET_IID(nsIAnonymousContentCreator))) {
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*aInstancePtr = static_cast<nsIAnonymousContentCreator*>(this);
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return NS_OK;
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}
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return nsHTMLButtonControlFrame::QueryInterface(aIID, aInstancePtr);
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}
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// Initially we hardcoded the default strings here.
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// Next, we used html.css to store the default label for various types
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// of buttons. (nsGfxButtonControlFrame::DoNavQuirksReflow rev 1.20)
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// However, since html.css is not internationalized, we now grab the default
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// label from a string bundle as is done for all other UI strings.
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// See bug 16999 for further details.
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nsresult
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nsGfxButtonControlFrame::GetDefaultLabel(nsXPIDLString& aString)
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{
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nsCOMPtr<nsIFormControl> form = do_QueryInterface(mContent);
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NS_ENSURE_TRUE(form, NS_ERROR_UNEXPECTED);
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PRInt32 type = form->GetType();
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const char *prop;
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if (type == NS_FORM_INPUT_RESET) {
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prop = "Reset";
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}
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else if (type == NS_FORM_INPUT_SUBMIT) {
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prop = "Submit";
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}
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else if (IsFileBrowseButton(type)) {
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prop = "Browse";
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}
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else {
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aString.Truncate();
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return NS_OK;
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}
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return nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
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prop, aString);
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}
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nsresult
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nsGfxButtonControlFrame::GetLabel(nsXPIDLString& aLabel)
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{
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// Get the text from the "value" property on our content if there is
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// one; otherwise set it to a default value (localized).
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nsresult rv;
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nsCOMPtr<nsIDOMHTMLInputElement> elt = do_QueryInterface(mContent);
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if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::value) && elt) {
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rv = elt->GetValue(aLabel);
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} else {
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// Generate localized label.
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// We can't make any assumption as to what the default would be
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// because the value is localized for non-english platforms, thus
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// it might not be the string "Reset", "Submit Query", or "Browse..."
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rv = GetDefaultLabel(aLabel);
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}
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NS_ENSURE_SUCCESS(rv, rv);
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// Compress whitespace out of label if needed.
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if (!GetStyleText()->WhiteSpaceIsSignificant()) {
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aLabel.CompressWhitespace();
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} else if (aLabel.Length() > 2 && aLabel.First() == ' ' &&
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aLabel.CharAt(aLabel.Length() - 1) == ' ') {
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// This is a bit of a hack. The reason this is here is as follows: we now
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// have default padding on our buttons to make them non-ugly.
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// Unfortunately, IE-windows does not have such padding, so people will
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// stick values like " ok " (with the spaces) in the buttons in an attempt
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// to make them look decent. Unfortunately, if they do this the button
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// looks way too big in Mozilla. Worse yet, if they do this _and_ set a
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// fixed width for the button we run into trouble because our focus-rect
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// border/padding and outer border take up 10px of the horizontal button
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// space or so; the result is that the text is misaligned, even with the
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// recentering we do in nsHTMLButtonFrame::Reflow. So to solve this, even
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// if the whitespace is significant, single leading and trailing _spaces_
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// (and not other whitespace) are removed. The proper solution, of
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// course, is to not have the focus rect painting taking up 6px of
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// horizontal space. We should do that instead (via XBL form controls or
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// changing the renderer) and remove this.
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aLabel.Cut(0, 1);
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aLabel.Truncate(aLabel.Length() - 1);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsGfxButtonControlFrame::AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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nsresult rv = NS_OK;
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// If the value attribute is set, update the text of the label
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if (nsGkAtoms::value == aAttribute) {
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if (mTextContent && mContent) {
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nsXPIDLString label;
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rv = GetLabel(label);
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NS_ENSURE_SUCCESS(rv, rv);
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mTextContent->SetText(label, PR_TRUE);
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} else {
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rv = NS_ERROR_UNEXPECTED;
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}
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// defer to HTMLButtonControlFrame
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} else {
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rv = nsHTMLButtonControlFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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return rv;
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}
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PRBool
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nsGfxButtonControlFrame::IsLeaf() const
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{
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return PR_TRUE;
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}
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nsIFrame*
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nsGfxButtonControlFrame::GetContentInsertionFrame()
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{
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return this;
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}
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NS_IMETHODIMP
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nsGfxButtonControlFrame::HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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// Override the HandleEvent to prevent the nsFrame::HandleEvent
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// from being called. The nsFrame::HandleEvent causes the button label
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// to be selected (Drawn with an XOR rectangle over the label)
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// do we have user-input style?
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const nsStyleUserInterface* uiStyle = GetStyleUserInterface();
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if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || 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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