michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //
michael@0: // David Hyatt & Eric Vaughan
michael@0: // Netscape Communications
michael@0: //
michael@0: // See documentation in associated header file
michael@0: //
michael@0: 
michael@0: #include "nsProgressMeterFrame.h"
michael@0: #include "nsCSSRendering.h"
michael@0: #include "nsIContent.h"
michael@0: #include "nsPresContext.h"
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsNameSpaceManager.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsBoxLayoutState.h"
michael@0: #include "nsIReflowCallback.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "mozilla/Attributes.h"
michael@0: 
michael@0: class nsReflowFrameRunnable : public nsRunnable
michael@0: {
michael@0: public:
michael@0:   nsReflowFrameRunnable(nsIFrame* aFrame,
michael@0:                         nsIPresShell::IntrinsicDirty aIntrinsicDirty,
michael@0:                         nsFrameState aBitToAdd);
michael@0: 
michael@0:   NS_DECL_NSIRUNNABLE
michael@0: 
michael@0:   nsWeakFrame mWeakFrame;
michael@0:   nsIPresShell::IntrinsicDirty mIntrinsicDirty;
michael@0:   nsFrameState mBitToAdd;
michael@0: };
michael@0: 
michael@0: nsReflowFrameRunnable::nsReflowFrameRunnable(nsIFrame* aFrame,
michael@0:                           nsIPresShell::IntrinsicDirty aIntrinsicDirty,
michael@0:                           nsFrameState aBitToAdd)
michael@0:   : mWeakFrame(aFrame),
michael@0:     mIntrinsicDirty(aIntrinsicDirty),
michael@0:     mBitToAdd(aBitToAdd)
michael@0: {
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsReflowFrameRunnable::Run()
michael@0: {
michael@0:   if (mWeakFrame.IsAlive()) {
michael@0:     mWeakFrame->PresContext()->PresShell()->
michael@0:       FrameNeedsReflow(mWeakFrame, mIntrinsicDirty, mBitToAdd);
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: //
michael@0: // NS_NewToolbarFrame
michael@0: //
michael@0: // Creates a new Toolbar frame and returns it
michael@0: //
michael@0: nsIFrame*
michael@0: NS_NewProgressMeterFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsProgressMeterFrame(aPresShell, aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsProgressMeterFrame)
michael@0: 
michael@0: //
michael@0: // nsProgressMeterFrame dstr
michael@0: //
michael@0: // Cleanup, if necessary
michael@0: //
michael@0: nsProgressMeterFrame :: ~nsProgressMeterFrame ( )
michael@0: {
michael@0: }
michael@0: 
michael@0: class nsAsyncProgressMeterInit MOZ_FINAL : public nsIReflowCallback
michael@0: {
michael@0: public:
michael@0:   nsAsyncProgressMeterInit(nsIFrame* aFrame) : mWeakFrame(aFrame) {}
michael@0: 
michael@0:   virtual bool ReflowFinished() MOZ_OVERRIDE
michael@0:   {
michael@0:     bool shouldFlush = false;
michael@0:     nsIFrame* frame = mWeakFrame.GetFrame();
michael@0:     if (frame) {
michael@0:       nsAutoScriptBlocker scriptBlocker;
michael@0:       frame->AttributeChanged(kNameSpaceID_None, nsGkAtoms::mode, 0);
michael@0:       shouldFlush = true;
michael@0:     }
michael@0:     delete this;
michael@0:     return shouldFlush;
michael@0:   }
michael@0: 
michael@0:   virtual void ReflowCallbackCanceled() MOZ_OVERRIDE
michael@0:   {
michael@0:     delete this;
michael@0:   }
michael@0: 
michael@0:   nsWeakFrame mWeakFrame;
michael@0: };
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsProgressMeterFrame::DoLayout(nsBoxLayoutState& aState)
michael@0: {
michael@0:   if (mNeedsReflowCallback) {
michael@0:     nsIReflowCallback* cb = new nsAsyncProgressMeterInit(this);
michael@0:     if (cb) {
michael@0:       PresContext()->PresShell()->PostReflowCallback(cb);
michael@0:     }
michael@0:     mNeedsReflowCallback = false;
michael@0:   }
michael@0:   return nsBoxFrame::DoLayout(aState);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsProgressMeterFrame::AttributeChanged(int32_t aNameSpaceID,
michael@0:                                        nsIAtom* aAttribute,
michael@0:                                        int32_t aModType)
michael@0: {
michael@0:   NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
michael@0:       "Scripts not blocked in nsProgressMeterFrame::AttributeChanged!");
michael@0:   nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
michael@0:                                              aModType);
michael@0:   if (NS_OK != rv) {
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   // did the progress change?
michael@0:   bool undetermined = mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mode,
michael@0:                                             nsGkAtoms::undetermined, eCaseMatters);
michael@0:   if (nsGkAtoms::mode == aAttribute ||
michael@0:       (!undetermined &&
michael@0:        (nsGkAtoms::value == aAttribute || nsGkAtoms::max == aAttribute))) {
michael@0:     nsIFrame* barChild = GetFirstPrincipalChild();
michael@0:     if (!barChild) return NS_OK;
michael@0:     nsIFrame* remainderChild = barChild->GetNextSibling();
michael@0:     if (!remainderChild) return NS_OK;
michael@0:     nsCOMPtr<nsIContent> remainderContent = remainderChild->GetContent();
michael@0:     if (!remainderContent) return NS_OK;
michael@0: 
michael@0:     int32_t flex = 1, maxFlex = 1;
michael@0:     if (!undetermined) {
michael@0:       nsAutoString value, maxValue;
michael@0:       mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, value);
michael@0:       mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::max, maxValue);
michael@0: 
michael@0:       nsresult error;
michael@0:       flex = value.ToInteger(&error);
michael@0:       maxFlex = maxValue.ToInteger(&error);
michael@0:       if (NS_FAILED(error) || maxValue.IsEmpty()) {
michael@0:         maxFlex = 100;
michael@0:       }
michael@0:       if (maxFlex < 1) {
michael@0:         maxFlex = 1;
michael@0:       }
michael@0:       if (flex < 0) {
michael@0:         flex = 0;
michael@0:       }
michael@0:       if (flex > maxFlex) {
michael@0:         flex = maxFlex;
michael@0:       }
michael@0:     }
michael@0: 
michael@0:     nsContentUtils::AddScriptRunner(new nsSetAttrRunnable(
michael@0:       barChild->GetContent(), nsGkAtoms::flex, flex));
michael@0:     nsContentUtils::AddScriptRunner(new nsSetAttrRunnable(
michael@0:       remainderContent, nsGkAtoms::flex, maxFlex - flex));
michael@0:     nsContentUtils::AddScriptRunner(new nsReflowFrameRunnable(
michael@0:       this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY));
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: #ifdef DEBUG_FRAME_DUMP
michael@0: nsresult
michael@0: nsProgressMeterFrame::GetFrameName(nsAString& aResult) const
michael@0: {
michael@0:   return MakeFrameName(NS_LITERAL_STRING("ProgressMeter"), aResult);
michael@0: }
michael@0: #endif