The Tor Browser: layout/forms/nsGfxButtonControlFrame.cpp@6474c204b198 (annotated)

layout/forms/nsGfxButtonControlFrame.cpp@6474c204b198 (annotated)

layout/forms/nsGfxButtonControlFrame.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "nsGfxButtonControlFrame.h"
 #include "nsIFormControl.h"
 #include "nsGkAtoms.h"
 #include "nsAutoPtr.h"
 #include "nsStyleSet.h"
 #include "nsContentUtils.h"
 // MouseEvent suppression in PP
 #include "nsContentList.h"
 #include "nsIDOMHTMLInputElement.h"
 #include "nsTextNode.h"
 using namespace mozilla;
 nsGfxButtonControlFrame::nsGfxButtonControlFrame(nsStyleContext* aContext):
   nsHTMLButtonControlFrame(aContext)
 {
 }
 nsIFrame*
 NS_NewGfxButtonControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
 {
   return new (aPresShell) nsGfxButtonControlFrame(aContext);
 }
 NS_IMPL_FRAMEARENA_HELPERS(nsGfxButtonControlFrame)
 void nsGfxButtonControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
 {
   nsContentUtils::DestroyAnonymousContent(&mTextContent);
   nsHTMLButtonControlFrame::DestroyFrom(aDestructRoot);
 }
 nsIAtom*
 nsGfxButtonControlFrame::GetType() const
 {
   return nsGkAtoms::gfxButtonControlFrame;
 }
 #ifdef DEBUG_FRAME_DUMP
 nsresult
 nsGfxButtonControlFrame::GetFrameName(nsAString& aResult) const
 {
   return MakeFrameName(NS_LITERAL_STRING("ButtonControl"), aResult);
 }
 #endif
 // Create the text content used as label for the button.
 // The frame will be generated by the frame constructor.
 nsresult
 nsGfxButtonControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
 {
   nsXPIDLString label;
   GetLabel(label);
   // Add a child text content node for the label
   mTextContent = new nsTextNode(mContent->NodeInfo()->NodeInfoManager());
   // set the value of the text node and add it to the child list
   mTextContent->SetText(label, false);
   aElements.AppendElement(mTextContent);
   return NS_OK;
 }
 void
 nsGfxButtonControlFrame::AppendAnonymousContentTo(nsBaseContentList& aElements,
                                                   uint32_t aFilter)
 {
   aElements.MaybeAppendElement(mTextContent);
 }
 // Create the text content used as label for the button.
 // The frame will be generated by the frame constructor.
 nsIFrame*
 nsGfxButtonControlFrame::CreateFrameFor(nsIContent*      aContent)
 {
   nsIFrame * newFrame = nullptr;
   if (aContent == mTextContent) {
     nsIFrame * parentFrame = mFrames.FirstChild();
     nsPresContext* presContext = PresContext();
     nsRefPtr<nsStyleContext> textStyleContext;
     textStyleContext = presContext->StyleSet()->
       ResolveStyleForNonElement(mStyleContext);
     newFrame = NS_NewTextFrame(presContext->PresShell(), textStyleContext);
     // initialize the text frame
     newFrame->Init(mTextContent, parentFrame, nullptr);
     mTextContent->SetPrimaryFrame(newFrame);
   }
   return newFrame;
 }
 NS_QUERYFRAME_HEAD(nsGfxButtonControlFrame)
   NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
 NS_QUERYFRAME_TAIL_INHERITING(nsHTMLButtonControlFrame)
 // Initially we hardcoded the default strings here.
 // Next, we used html.css to store the default label for various types
 // of buttons. (nsGfxButtonControlFrame::DoNavQuirksReflow rev 1.20)
 // However, since html.css is not internationalized, we now grab the default
 // label from a string bundle as is done for all other UI strings.
 // See bug 16999 for further details.
 nsresult
 nsGfxButtonControlFrame::GetDefaultLabel(nsXPIDLString& aString) const
 {
   nsCOMPtr<nsIFormControl> form = do_QueryInterface(mContent);
   NS_ENSURE_TRUE(form, NS_ERROR_UNEXPECTED);
   int32_t type = form->GetType();
   const char *prop;
   if (type == NS_FORM_INPUT_RESET) {
     prop = "Reset";
   }
   else if (type == NS_FORM_INPUT_SUBMIT) {
     prop = "Submit";
   }
   else {
     aString.Truncate();
     return NS_OK;
   }
   return nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
                                             prop, aString);
 }
 nsresult
 nsGfxButtonControlFrame::GetLabel(nsXPIDLString& aLabel)
 {
   // Get the text from the "value" property on our content if there is
   // one; otherwise set it to a default value (localized).
   nsresult rv;
   nsCOMPtr<nsIDOMHTMLInputElement> elt = do_QueryInterface(mContent);
   if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::value) && elt) {
     rv = elt->GetValue(aLabel);
   } else {
     // Generate localized label.
     // We can't make any assumption as to what the default would be
     // because the value is localized for non-english platforms, thus
     // it might not be the string "Reset", "Submit Query", or "Browse..."
     rv = GetDefaultLabel(aLabel);
   }
   NS_ENSURE_SUCCESS(rv, rv);
   // Compress whitespace out of label if needed.
   if (!StyleText()->WhiteSpaceIsSignificant()) {
     aLabel.CompressWhitespace();
   } else if (aLabel.Length() > 2 && aLabel.First() == ' ' &&
              aLabel.CharAt(aLabel.Length() - 1) == ' ') {
     // This is a bit of a hack.  The reason this is here is as follows: we now
     // have default padding on our buttons to make them non-ugly.
     // Unfortunately, IE-windows does not have such padding, so people will
     // stick values like " ok " (with the spaces) in the buttons in an attempt
     // to make them look decent.  Unfortunately, if they do this the button
     // looks way too big in Mozilla.  Worse yet, if they do this _and_ set a
     // fixed width for the button we run into trouble because our focus-rect
     // border/padding and outer border take up 10px of the horizontal button
     // space or so; the result is that the text is misaligned, even with the
     // recentering we do in nsHTMLButtonControlFrame::Reflow.  So to solve
     // this, even if the whitespace is significant, single leading and trailing
     // _spaces_ (and not other whitespace) are removed.  The proper solution,
     // of course, is to not have the focus rect painting taking up 6px of
     // horizontal space. We should do that instead (via XBL form controls or
     // changing the renderer) and remove this.
     aLabel.Cut(0, 1);
     aLabel.Truncate(aLabel.Length() - 1);
   }
   return NS_OK;
 }
 nsresult
 nsGfxButtonControlFrame::AttributeChanged(int32_t         aNameSpaceID,
                                           nsIAtom*        aAttribute,
                                           int32_t         aModType)
 {
   nsresult rv = NS_OK;
   // If the value attribute is set, update the text of the label
   if (nsGkAtoms::value == aAttribute) {
     if (mTextContent && mContent) {
       nsXPIDLString label;
       rv = GetLabel(label);
       NS_ENSURE_SUCCESS(rv, rv);
       mTextContent->SetText(label, true);
     } else {
       rv = NS_ERROR_UNEXPECTED;
     }
   // defer to HTMLButtonControlFrame
   } else {
     rv = nsHTMLButtonControlFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
   }
   return rv;
 }
 bool
 nsGfxButtonControlFrame::IsLeaf() const
 {
   return true;
 }
 nsIFrame*
 nsGfxButtonControlFrame::GetContentInsertionFrame()
 {
   return this;
 }
 nsresult
 nsGfxButtonControlFrame::HandleEvent(nsPresContext* aPresContext,
                                      WidgetGUIEvent* aEvent,
                                      nsEventStatus* aEventStatus)
 {
   // Override the HandleEvent to prevent the nsFrame::HandleEvent
   // from being called. The nsFrame::HandleEvent causes the button label
   // to be selected (Drawn with an XOR rectangle over the label)
   // do we have user-input style?
   const nsStyleUserInterface* uiStyle = StyleUserInterface();
   if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
     return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
   return NS_OK;
 }

The Tor Browser / annotate

layout/forms/nsGfxButtonControlFrame.cpp@6474c204b198 (annotated)

layout/forms/nsGfxButtonControlFrame.cpp