зеркало из https://github.com/mozilla/pjs.git
New code that isn't being used
This commit is contained in:
troy%netscape.com
Родитель
59ce7cdf55
Коммит
d342b8daf0
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@ -29,6 +29,7 @@
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#include "nsIReflowCommand.h"
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class nsIContent;
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class nsIContentIterator;
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class nsIDocument;
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class nsIDocumentObserver;
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class nsIFrame;
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@ -403,6 +404,18 @@ public:
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*/
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NS_IMETHOD IsReflowLocked(PRBool* aIsLocked) = 0;
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/**
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* Returns a content iterator to iterate the generated content nodes.
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* You must specify whether you want to iterate the "before" generated
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* content or the "after" generated content. If there is no generated
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* content of the specified type for the promary frame associated with
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* with the content object then NULL is returned
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*/
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enum GeneratedContentType {Before, After};
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NS_IMETHOD GetGeneratedContentIterator(nsIContent* aContent,
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GeneratedContentType aType,
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nsIContentIterator** aIterator) const = 0;
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/**
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* See if reflow verification is enabled. To enable reflow verification add
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* "verifyreflow:1" to your NSPR_LOG_MODULES environment variable
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@ -75,6 +75,7 @@
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#include "nsTimer.h"
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#include "nsWeakPtr.h"
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#include "plarena.h"
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#include "nsCSSAtoms.h"
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#ifdef MOZ_PERF_METRICS
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#include "nsITimeRecorder.h"
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#endif
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@ -371,6 +372,10 @@ public:
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NS_IMETHOD GetReflowEventStatus(PRBool* aPending);
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NS_IMETHOD SetReflowEventStatus(PRBool aPending);
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NS_IMETHOD GetGeneratedContentIterator(nsIContent* aContent,
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GeneratedContentType aType,
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nsIContentIterator** aIterator) const;
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/**
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* Reflow batching
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*/
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@ -2505,6 +2510,123 @@ PresShell::SetReflowEventStatus(PRBool aPending)
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mPendingReflowEvent = aPending;
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return NS_OK;
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}
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static PRBool
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IsGeneratedContentFrame(nsIFrame* aFrame)
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{
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nsFrameState frameState;
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aFrame->GetFrameState(&frameState);
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return (frameState & NS_FRAME_GENERATED_CONTENT) != 0;
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}
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static PRBool
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IsPseudoFrame(nsIFrame* aFrame, nsIContent* aParentContent)
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{
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nsCOMPtr<nsIContent> content;
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aFrame->GetContent(getter_AddRefs(content));
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return content.get() == aParentContent;
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}
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static nsIFrame*
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GetFirstChildFrame(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIContent* aContent)
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{
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nsIFrame* childFrame;
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// Get the first child frame
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aFrame->FirstChild(aPresContext, nsnull, &childFrame);
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// If the child frame is a pseudo-frame, then return its first child
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if (childFrame && IsPseudoFrame(childFrame, aContent)) {
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return GetFirstChildFrame(aPresContext, childFrame, aContent);
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}
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return childFrame;
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}
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static nsIFrame*
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GetLastChildFrame(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIContent* aContent)
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{
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NS_PRECONDITION(aFrame, "NULL frame pointer");
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// Get the last in flow frame
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nsIFrame* lastInFlow;
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while (aFrame) {
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lastInFlow = aFrame;
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lastInFlow->GetNextInFlow(&aFrame);
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}
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// Get the first child frame
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nsIFrame* firstChildFrame;
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lastInFlow->FirstChild(aPresContext, nsnull, &firstChildFrame);
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if (firstChildFrame) {
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nsFrameList frameList(firstChildFrame);
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nsIFrame* lastChildFrame = frameList.LastChild();
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NS_ASSERTION(lastChildFrame, "unexpected error");
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// If the last child frame is a pseudo-frame, then return its last child
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if (lastChildFrame && IsPseudoFrame(lastChildFrame, aContent)) {
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return GetLastChildFrame(aPresContext, lastChildFrame, aContent);
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}
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return lastChildFrame;
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}
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return nsnull;
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}
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NS_IMETHODIMP
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PresShell::GetGeneratedContentIterator(nsIContent* aContent,
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GeneratedContentType aType,
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nsIContentIterator** aIterator) const
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{
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nsIFrame* primaryFrame;
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nsresult rv = NS_OK;
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// Initialize OUT parameter
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*aIterator = nsnull;
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// Get the primary frame associated with the content object
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GetPrimaryFrameFor(aContent, &primaryFrame);
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if (primaryFrame) {
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// See whether it's a request for the before or after generated content
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if (Before == aType) {
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// The most efficient thing to do is to get the first child frame,
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// and see if it is associated with generated content
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nsIFrame* firstChildFrame = GetFirstChildFrame(mPresContext, primaryFrame, aContent);
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if (firstChildFrame && IsGeneratedContentFrame(firstChildFrame)) {
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// Create an iterator
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rv = NS_NewGeneratedContentIterator(mPresContext, firstChildFrame, aIterator);
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}
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} else {
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// Avoid finding the last child frame unless we need to. Instead probe
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// for the existence of the pseudo-element
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nsCOMPtr<nsIStyleContext> styleContext;
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nsCOMPtr<nsIStyleContext> pseudoStyleContext;
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primaryFrame->GetStyleContext(getter_AddRefs(styleContext));
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mPresContext->ProbePseudoStyleContextFor(aContent, nsCSSAtoms::afterPseudo,
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styleContext, PR_FALSE,
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getter_AddRefs(pseudoStyleContext));
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if (pseudoStyleContext) {
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nsIFrame* lastChildFrame = GetLastChildFrame(mPresContext, primaryFrame, aContent);
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NS_ASSERTION(lastChildFrame && IsGeneratedContentFrame(lastChildFrame),
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"can't find generated content frame");
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// Create an iterator
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rv = NS_NewGeneratedContentIterator(mPresContext, lastChildFrame, aIterator);
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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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PresShell::FlushPendingNotifications()
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@ -29,6 +29,7 @@
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#include "nsIReflowCommand.h"
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class nsIContent;
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class nsIContentIterator;
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class nsIDocument;
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class nsIDocumentObserver;
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class nsIFrame;
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@ -403,6 +404,18 @@ public:
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*/
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NS_IMETHOD IsReflowLocked(PRBool* aIsLocked) = 0;
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/**
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* Returns a content iterator to iterate the generated content nodes.
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* You must specify whether you want to iterate the "before" generated
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* content or the "after" generated content. If there is no generated
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* content of the specified type for the promary frame associated with
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* with the content object then NULL is returned
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*/
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enum GeneratedContentType {Before, After};
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NS_IMETHOD GetGeneratedContentIterator(nsIContent* aContent,
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GeneratedContentType aType,
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nsIContentIterator** aIterator) const = 0;
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/**
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* See if reflow verification is enabled. To enable reflow verification add
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* "verifyreflow:1" to your NSPR_LOG_MODULES environment variable
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@ -75,6 +75,7 @@
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#include "nsTimer.h"
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#include "nsWeakPtr.h"
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#include "plarena.h"
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#include "nsCSSAtoms.h"
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#ifdef MOZ_PERF_METRICS
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#include "nsITimeRecorder.h"
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#endif
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@ -371,6 +372,10 @@ public:
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NS_IMETHOD GetReflowEventStatus(PRBool* aPending);
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NS_IMETHOD SetReflowEventStatus(PRBool aPending);
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NS_IMETHOD GetGeneratedContentIterator(nsIContent* aContent,
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GeneratedContentType aType,
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nsIContentIterator** aIterator) const;
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/**
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* Reflow batching
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*/
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@ -2505,6 +2510,123 @@ PresShell::SetReflowEventStatus(PRBool aPending)
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mPendingReflowEvent = aPending;
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return NS_OK;
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}
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static PRBool
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IsGeneratedContentFrame(nsIFrame* aFrame)
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{
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nsFrameState frameState;
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aFrame->GetFrameState(&frameState);
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return (frameState & NS_FRAME_GENERATED_CONTENT) != 0;
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}
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static PRBool
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IsPseudoFrame(nsIFrame* aFrame, nsIContent* aParentContent)
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{
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nsCOMPtr<nsIContent> content;
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aFrame->GetContent(getter_AddRefs(content));
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return content.get() == aParentContent;
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}
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static nsIFrame*
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GetFirstChildFrame(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIContent* aContent)
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{
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nsIFrame* childFrame;
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// Get the first child frame
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aFrame->FirstChild(aPresContext, nsnull, &childFrame);
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// If the child frame is a pseudo-frame, then return its first child
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if (childFrame && IsPseudoFrame(childFrame, aContent)) {
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return GetFirstChildFrame(aPresContext, childFrame, aContent);
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}
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return childFrame;
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}
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static nsIFrame*
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GetLastChildFrame(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIContent* aContent)
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{
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NS_PRECONDITION(aFrame, "NULL frame pointer");
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// Get the last in flow frame
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nsIFrame* lastInFlow;
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while (aFrame) {
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lastInFlow = aFrame;
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lastInFlow->GetNextInFlow(&aFrame);
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}
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// Get the first child frame
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nsIFrame* firstChildFrame;
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lastInFlow->FirstChild(aPresContext, nsnull, &firstChildFrame);
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if (firstChildFrame) {
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nsFrameList frameList(firstChildFrame);
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nsIFrame* lastChildFrame = frameList.LastChild();
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NS_ASSERTION(lastChildFrame, "unexpected error");
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// If the last child frame is a pseudo-frame, then return its last child
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if (lastChildFrame && IsPseudoFrame(lastChildFrame, aContent)) {
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return GetLastChildFrame(aPresContext, lastChildFrame, aContent);
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}
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return lastChildFrame;
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}
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return nsnull;
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}
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NS_IMETHODIMP
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PresShell::GetGeneratedContentIterator(nsIContent* aContent,
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GeneratedContentType aType,
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nsIContentIterator** aIterator) const
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{
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nsIFrame* primaryFrame;
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nsresult rv = NS_OK;
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// Initialize OUT parameter
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*aIterator = nsnull;
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// Get the primary frame associated with the content object
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GetPrimaryFrameFor(aContent, &primaryFrame);
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if (primaryFrame) {
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// See whether it's a request for the before or after generated content
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if (Before == aType) {
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// The most efficient thing to do is to get the first child frame,
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// and see if it is associated with generated content
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nsIFrame* firstChildFrame = GetFirstChildFrame(mPresContext, primaryFrame, aContent);
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if (firstChildFrame && IsGeneratedContentFrame(firstChildFrame)) {
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// Create an iterator
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rv = NS_NewGeneratedContentIterator(mPresContext, firstChildFrame, aIterator);
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}
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} else {
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// Avoid finding the last child frame unless we need to. Instead probe
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// for the existence of the pseudo-element
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nsCOMPtr<nsIStyleContext> styleContext;
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nsCOMPtr<nsIStyleContext> pseudoStyleContext;
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primaryFrame->GetStyleContext(getter_AddRefs(styleContext));
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mPresContext->ProbePseudoStyleContextFor(aContent, nsCSSAtoms::afterPseudo,
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styleContext, PR_FALSE,
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getter_AddRefs(pseudoStyleContext));
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if (pseudoStyleContext) {
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nsIFrame* lastChildFrame = GetLastChildFrame(mPresContext, primaryFrame, aContent);
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NS_ASSERTION(lastChildFrame && IsGeneratedContentFrame(lastChildFrame),
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"can't find generated content frame");
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// Create an iterator
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rv = NS_NewGeneratedContentIterator(mPresContext, lastChildFrame, aIterator);
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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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PresShell::FlushPendingNotifications()
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