зеркало из https://github.com/mozilla/pjs.git
added pseudo style support
added debug list of context graph
This commit is contained in:
peterl
Родитель
12db5cfc8d
Коммит
8cb0400608
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@ -23,7 +23,6 @@
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#include "nsIFrame.h"
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#include "nsHashtable.h"
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static NS_DEFINE_IID(kIStyleSetIID, NS_ISTYLE_SET_IID);
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class ContextKey : public nsHashKey {
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@ -196,6 +195,14 @@ public:
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nsIContent* aContent,
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nsIFrame* aParentFrame);
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virtual nsIStyleContext* ResolvePseudoStyleFor(nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame);
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virtual nsIStyleContext* ProbePseudoStyleFor(nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame);
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// xxx style rules enumeration
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virtual void List(FILE* out = stdout, PRInt32 aIndent = 0);
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@ -208,12 +215,20 @@ private:
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protected:
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virtual ~StyleSetImpl();
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PRBool EnsureArray(nsISupportsArray** aArray);
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nsIStyleContext* GetContext(nsIPresContext* aPresContext, nsIFrame* aParentFrame,
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nsIStyleContext* aParentContext, nsISupportsArray* aRules);
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PRInt32 RulesMatching(nsISupportsArray* aSheets,
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nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParentFrame,
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nsISupportsArray* aResults);
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PRInt32 RulesMatching(nsISupportsArray* aSheets,
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nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame,
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nsISupportsArray* aResults);
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void List(FILE* out, PRInt32 aIndent, nsISupportsArray* aSheets);
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void ListContexts(FILE* out, PRInt32 aIndent);
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nsISupportsArray* mOverrideSheets;
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nsISupportsArray* mDocSheets;
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@ -445,12 +460,32 @@ PRInt32 StyleSetImpl::RulesMatching(nsISupportsArray* aSheets,
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return ruleCount;
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}
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nsIStyleContext* StyleSetImpl::GetContext(nsIPresContext* aPresContext, nsIFrame* aParentFrame,
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nsIStyleContext* aParentContext, nsISupportsArray* aRules)
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{
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// check for cached ruleSet to context or create
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ContextKey tempKey(aParentContext, aRules);
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nsIStyleContext* result = (nsIStyleContext*)mStyleContexts.Get(&tempKey);
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if (nsnull == result) {
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if (NS_OK == NS_NewStyleContext(&result, aRules, aPresContext, aParentFrame)) {
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tempKey.SetContext(result);
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mStyleContexts.Put(&tempKey, result); // hashtable clones key, so this is OK (table gets first ref)
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NS_ADDREF(result); // add ref for the caller
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//fprintf(stdout, "+");
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}
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}
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else {
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NS_ADDREF(result);
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//fprintf(stdout, "-");
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}
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return result;
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}
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nsIStyleContext* StyleSetImpl::ResolveStyleFor(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParentFrame)
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{
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nsIStyleContext* result = nsnull;
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nsIStyleContext* parentContext = nsnull;
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if (nsnull != aParentFrame) {
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@ -468,21 +503,96 @@ nsIStyleContext* StyleSetImpl::ResolveStyleFor(nsIPresContext* aPresContext,
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ruleCount += RulesMatching(mDocSheets, aPresContext, aContent, aParentFrame, rules);
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ruleCount += RulesMatching(mBackstopSheets, aPresContext, aContent, aParentFrame, rules);
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// then check for cached ruleSet to context or create
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ContextKey tempKey(parentContext, rules);
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result = (nsIStyleContext*)mStyleContexts.Get(&tempKey);
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if (nsnull == result) {
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if (NS_OK == NS_NewStyleContext(&result, rules, aPresContext, aContent, aParentFrame)) {
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tempKey.SetContext(result);
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mStyleContexts.Put(&tempKey, result); // hashtable clones key, so this is OK (table gets first ref)
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NS_ADDREF(result); // add ref for the caller
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//fprintf(stdout, "+");
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result = GetContext(aPresContext, aParentFrame, parentContext, rules);
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NS_RELEASE(rules);
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}
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NS_IF_RELEASE(parentContext);
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return result;
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}
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PRInt32 StyleSetImpl::RulesMatching(nsISupportsArray* aSheets,
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nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame,
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nsISupportsArray* aResults)
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{
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PRInt32 ruleCount = 0;
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if (nsnull != aSheets) {
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PRInt32 sheetCount = aSheets->Count();
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PRInt32 index;
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for (index = 0; index < sheetCount; index++) {
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nsIStyleSheet* sheet = (nsIStyleSheet*)aSheets->ElementAt(index);
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ruleCount += sheet->RulesMatching(aPresContext, aPseudoTag, aParentFrame,
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aResults);
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NS_RELEASE(sheet);
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}
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}
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else {
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NS_ADDREF(result);
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//fprintf(stdout, "-");
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return ruleCount;
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}
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nsIStyleContext* StyleSetImpl::ResolvePseudoStyleFor(nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame)
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{
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nsIStyleContext* result = nsnull;
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nsIStyleContext* parentContext = nsnull;
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if (nsnull != aParentFrame) {
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aParentFrame->GetStyleContext(aPresContext, parentContext);
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NS_ASSERTION(nsnull != parentContext, "parent must have style context");
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}
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// want to check parent frame's context for cached child context first
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// then do a brute force rule search
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nsISupportsArray* rules = nsnull;
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if (NS_OK == NS_NewISupportsArray(&rules)) {
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PRInt32 ruleCount = RulesMatching(mOverrideSheets, aPresContext, aPseudoTag, aParentFrame, rules);
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ruleCount += RulesMatching(mDocSheets, aPresContext, aPseudoTag, aParentFrame, rules);
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ruleCount += RulesMatching(mBackstopSheets, aPresContext, aPseudoTag, aParentFrame, rules);
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result = GetContext(aPresContext, aParentFrame, parentContext, rules);
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NS_RELEASE(rules);
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}
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NS_IF_RELEASE(parentContext);
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return result;
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}
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nsIStyleContext* StyleSetImpl::ProbePseudoStyleFor(nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame)
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{
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nsIStyleContext* result = nsnull;
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nsIStyleContext* parentContext = nsnull;
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if (nsnull != aParentFrame) {
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aParentFrame->GetStyleContext(aPresContext, parentContext);
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NS_ASSERTION(nsnull != parentContext, "parent must have style context");
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}
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// want to check parent frame's context for cached child context first
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// then do a brute force rule search
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nsISupportsArray* rules = nsnull;
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if (NS_OK == NS_NewISupportsArray(&rules)) {
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PRInt32 ruleCount = RulesMatching(mOverrideSheets, aPresContext, aPseudoTag, aParentFrame, rules);
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ruleCount += RulesMatching(mDocSheets, aPresContext, aPseudoTag, aParentFrame, rules);
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ruleCount += RulesMatching(mBackstopSheets, aPresContext, aPseudoTag, aParentFrame, rules);
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if (0 < ruleCount) {
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result = GetContext(aPresContext, aParentFrame, parentContext, rules);
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}
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NS_RELEASE(rules);
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}
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@ -512,6 +622,135 @@ void StyleSetImpl::List(FILE* out, PRInt32 aIndent)
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List(out, aIndent, mBackstopSheets);
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}
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struct ContextNode {
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nsIStyleContext* mContext;
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ContextNode* mNext;
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ContextNode* mChild;
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ContextNode(nsIStyleContext* aContext)
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{
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mContext = aContext;
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mNext = nsnull;
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mChild = nsnull;
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}
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~ContextNode(void)
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{
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if (nsnull != mNext) {
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delete mNext;
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}
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if (nsnull != mChild) {
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delete mChild;
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}
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}
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};
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static ContextNode* gRootNode;
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static ContextNode* FindNode(nsIStyleContext* aContext, ContextNode* aStart)
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{
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ContextNode* node = aStart;
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while (nsnull != node) {
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if (node->mContext == aContext) {
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return node;
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}
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if (nsnull != node->mChild) {
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ContextNode* result = FindNode(aContext, node->mChild);
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if (nsnull != result) {
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return result;
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}
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}
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node = node->mNext;
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}
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return nsnull;
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}
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PRBool GatherContexts(nsHashKey *aKey, void *aData)
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{
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PRBool result = PR_TRUE;
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nsIStyleContext* context = (nsIStyleContext*)aData;
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nsIStyleContext* parent = context->GetParent();
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ContextNode* node = new ContextNode(context);
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if (nsnull == gRootNode) {
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gRootNode = node;
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}
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else {
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if (nsnull == parent) { // found real root, replace temp
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node->mNext = gRootNode; // orphan the old root
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gRootNode = node;
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}
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else {
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ContextNode* parentNode = FindNode(parent, gRootNode);
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if (nsnull == parentNode) { // hang orhpans off root
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node->mNext = gRootNode->mNext;
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gRootNode->mNext = node;
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}
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else {
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node->mNext = parentNode->mChild;
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parentNode->mChild = node;
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}
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}
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}
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// graft orphans
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ContextNode* prevOrphan = nsnull;
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ContextNode* orphan = gRootNode;
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while (nsnull != orphan) {
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nsIStyleContext* orphanParent = orphan->mContext->GetParent();
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if (orphanParent == context) { // found our child
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if (orphan == gRootNode) {
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gRootNode = orphan->mNext;
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orphan->mNext = node->mChild;
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node->mChild = orphan;
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orphan = gRootNode;
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}
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else {
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ContextNode* foundling = orphan;
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orphan = orphan->mNext;
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prevOrphan->mNext = orphan;
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foundling->mNext = node->mChild;
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node->mChild = foundling;
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}
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}
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else {
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prevOrphan = orphan;
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orphan = orphan->mNext;
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}
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NS_IF_RELEASE(orphanParent);
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}
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NS_IF_RELEASE(parent);
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return result;
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}
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static PRInt32 ListNode(ContextNode* aNode, FILE* out, PRInt32 aIndent)
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{
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PRInt32 count = 0;
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ContextNode* node = aNode;
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while (nsnull != node) {
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node->mContext->List(out, aIndent);
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count++;
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if (nsnull != node->mChild) {
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nsIStyleContext* childParent = node->mChild->mContext->GetParent();
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NS_ASSERTION(childParent == node->mContext, "broken graph");
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NS_RELEASE(childParent);
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count += ListNode(node->mChild, out, aIndent + 1);
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}
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node = node->mNext;
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}
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return count;
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}
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void StyleSetImpl::ListContexts(FILE* out, PRInt32 aIndent)
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{
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mStyleContexts.Enumerate(GatherContexts);
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NS_ASSERTION(gRootNode->mNext == nsnull, "dangling orphan");
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PRInt32 listCount = ListNode(gRootNode, out, aIndent);
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NS_ASSERTION(listCount == mStyleContexts.Count(), "graph incomplete");
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delete gRootNode;
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gRootNode = nsnull;
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}
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NS_LAYOUT nsresult
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NS_NewStyleSet(nsIStyleSet** aInstancePtrResult)
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@ -23,7 +23,6 @@
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#include "nsIFrame.h"
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#include "nsHashtable.h"
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static NS_DEFINE_IID(kIStyleSetIID, NS_ISTYLE_SET_IID);
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class ContextKey : public nsHashKey {
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|
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@ -196,6 +195,14 @@ public:
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nsIContent* aContent,
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nsIFrame* aParentFrame);
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virtual nsIStyleContext* ResolvePseudoStyleFor(nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame);
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virtual nsIStyleContext* ProbePseudoStyleFor(nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame);
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// xxx style rules enumeration
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virtual void List(FILE* out = stdout, PRInt32 aIndent = 0);
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|
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@ -208,12 +215,20 @@ private:
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protected:
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virtual ~StyleSetImpl();
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PRBool EnsureArray(nsISupportsArray** aArray);
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nsIStyleContext* GetContext(nsIPresContext* aPresContext, nsIFrame* aParentFrame,
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nsIStyleContext* aParentContext, nsISupportsArray* aRules);
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PRInt32 RulesMatching(nsISupportsArray* aSheets,
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nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParentFrame,
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nsISupportsArray* aResults);
|
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PRInt32 RulesMatching(nsISupportsArray* aSheets,
|
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nsIPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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nsIFrame* aParentFrame,
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nsISupportsArray* aResults);
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void List(FILE* out, PRInt32 aIndent, nsISupportsArray* aSheets);
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void ListContexts(FILE* out, PRInt32 aIndent);
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nsISupportsArray* mOverrideSheets;
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nsISupportsArray* mDocSheets;
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|
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@ -445,12 +460,32 @@ PRInt32 StyleSetImpl::RulesMatching(nsISupportsArray* aSheets,
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return ruleCount;
|
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}
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nsIStyleContext* StyleSetImpl::GetContext(nsIPresContext* aPresContext, nsIFrame* aParentFrame,
|
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nsIStyleContext* aParentContext, nsISupportsArray* aRules)
|
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{
|
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// check for cached ruleSet to context or create
|
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ContextKey tempKey(aParentContext, aRules);
|
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nsIStyleContext* result = (nsIStyleContext*)mStyleContexts.Get(&tempKey);
|
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if (nsnull == result) {
|
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if (NS_OK == NS_NewStyleContext(&result, aRules, aPresContext, aParentFrame)) {
|
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tempKey.SetContext(result);
|
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mStyleContexts.Put(&tempKey, result); // hashtable clones key, so this is OK (table gets first ref)
|
||||
NS_ADDREF(result); // add ref for the caller
|
||||
//fprintf(stdout, "+");
|
||||
}
|
||||
}
|
||||
else {
|
||||
NS_ADDREF(result);
|
||||
//fprintf(stdout, "-");
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
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nsIStyleContext* StyleSetImpl::ResolveStyleFor(nsIPresContext* aPresContext,
|
||||
nsIContent* aContent,
|
||||
nsIFrame* aParentFrame)
|
||||
{
|
||||
nsIStyleContext* result = nsnull;
|
||||
|
||||
nsIStyleContext* parentContext = nsnull;
|
||||
|
||||
if (nsnull != aParentFrame) {
|
||||
|
|
@ -468,21 +503,96 @@ nsIStyleContext* StyleSetImpl::ResolveStyleFor(nsIPresContext* aPresContext,
|
|||
ruleCount += RulesMatching(mDocSheets, aPresContext, aContent, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mBackstopSheets, aPresContext, aContent, aParentFrame, rules);
|
||||
|
||||
// then check for cached ruleSet to context or create
|
||||
ContextKey tempKey(parentContext, rules);
|
||||
result = (nsIStyleContext*)mStyleContexts.Get(&tempKey);
|
||||
if (nsnull == result) {
|
||||
if (NS_OK == NS_NewStyleContext(&result, rules, aPresContext, aContent, aParentFrame)) {
|
||||
tempKey.SetContext(result);
|
||||
mStyleContexts.Put(&tempKey, result); // hashtable clones key, so this is OK (table gets first ref)
|
||||
NS_ADDREF(result); // add ref for the caller
|
||||
//fprintf(stdout, "+");
|
||||
result = GetContext(aPresContext, aParentFrame, parentContext, rules);
|
||||
|
||||
NS_RELEASE(rules);
|
||||
}
|
||||
|
||||
NS_IF_RELEASE(parentContext);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
PRInt32 StyleSetImpl::RulesMatching(nsISupportsArray* aSheets,
|
||||
nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame,
|
||||
nsISupportsArray* aResults)
|
||||
{
|
||||
PRInt32 ruleCount = 0;
|
||||
|
||||
if (nsnull != aSheets) {
|
||||
PRInt32 sheetCount = aSheets->Count();
|
||||
PRInt32 index;
|
||||
for (index = 0; index < sheetCount; index++) {
|
||||
nsIStyleSheet* sheet = (nsIStyleSheet*)aSheets->ElementAt(index);
|
||||
ruleCount += sheet->RulesMatching(aPresContext, aPseudoTag, aParentFrame,
|
||||
aResults);
|
||||
NS_RELEASE(sheet);
|
||||
}
|
||||
}
|
||||
else {
|
||||
NS_ADDREF(result);
|
||||
//fprintf(stdout, "-");
|
||||
return ruleCount;
|
||||
}
|
||||
|
||||
nsIStyleContext* StyleSetImpl::ResolvePseudoStyleFor(nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame)
|
||||
{
|
||||
nsIStyleContext* result = nsnull;
|
||||
nsIStyleContext* parentContext = nsnull;
|
||||
|
||||
if (nsnull != aParentFrame) {
|
||||
aParentFrame->GetStyleContext(aPresContext, parentContext);
|
||||
NS_ASSERTION(nsnull != parentContext, "parent must have style context");
|
||||
}
|
||||
|
||||
// want to check parent frame's context for cached child context first
|
||||
|
||||
// then do a brute force rule search
|
||||
|
||||
nsISupportsArray* rules = nsnull;
|
||||
if (NS_OK == NS_NewISupportsArray(&rules)) {
|
||||
PRInt32 ruleCount = RulesMatching(mOverrideSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mDocSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mBackstopSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
|
||||
result = GetContext(aPresContext, aParentFrame, parentContext, rules);
|
||||
|
||||
NS_RELEASE(rules);
|
||||
}
|
||||
|
||||
NS_IF_RELEASE(parentContext);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
nsIStyleContext* StyleSetImpl::ProbePseudoStyleFor(nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame)
|
||||
{
|
||||
nsIStyleContext* result = nsnull;
|
||||
nsIStyleContext* parentContext = nsnull;
|
||||
|
||||
if (nsnull != aParentFrame) {
|
||||
aParentFrame->GetStyleContext(aPresContext, parentContext);
|
||||
NS_ASSERTION(nsnull != parentContext, "parent must have style context");
|
||||
}
|
||||
|
||||
// want to check parent frame's context for cached child context first
|
||||
|
||||
// then do a brute force rule search
|
||||
|
||||
nsISupportsArray* rules = nsnull;
|
||||
if (NS_OK == NS_NewISupportsArray(&rules)) {
|
||||
PRInt32 ruleCount = RulesMatching(mOverrideSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mDocSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mBackstopSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
|
||||
if (0 < ruleCount) {
|
||||
result = GetContext(aPresContext, aParentFrame, parentContext, rules);
|
||||
}
|
||||
|
||||
NS_RELEASE(rules);
|
||||
}
|
||||
|
||||
|
|
@ -512,6 +622,135 @@ void StyleSetImpl::List(FILE* out, PRInt32 aIndent)
|
|||
List(out, aIndent, mBackstopSheets);
|
||||
}
|
||||
|
||||
struct ContextNode {
|
||||
nsIStyleContext* mContext;
|
||||
ContextNode* mNext;
|
||||
ContextNode* mChild;
|
||||
ContextNode(nsIStyleContext* aContext)
|
||||
{
|
||||
mContext = aContext;
|
||||
mNext = nsnull;
|
||||
mChild = nsnull;
|
||||
}
|
||||
~ContextNode(void)
|
||||
{
|
||||
if (nsnull != mNext) {
|
||||
delete mNext;
|
||||
}
|
||||
if (nsnull != mChild) {
|
||||
delete mChild;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
static ContextNode* gRootNode;
|
||||
|
||||
static ContextNode* FindNode(nsIStyleContext* aContext, ContextNode* aStart)
|
||||
{
|
||||
ContextNode* node = aStart;
|
||||
while (nsnull != node) {
|
||||
if (node->mContext == aContext) {
|
||||
return node;
|
||||
}
|
||||
if (nsnull != node->mChild) {
|
||||
ContextNode* result = FindNode(aContext, node->mChild);
|
||||
if (nsnull != result) {
|
||||
return result;
|
||||
}
|
||||
}
|
||||
node = node->mNext;
|
||||
}
|
||||
return nsnull;
|
||||
}
|
||||
|
||||
PRBool GatherContexts(nsHashKey *aKey, void *aData)
|
||||
{
|
||||
PRBool result = PR_TRUE;
|
||||
|
||||
nsIStyleContext* context = (nsIStyleContext*)aData;
|
||||
nsIStyleContext* parent = context->GetParent();
|
||||
ContextNode* node = new ContextNode(context);
|
||||
|
||||
if (nsnull == gRootNode) {
|
||||
gRootNode = node;
|
||||
}
|
||||
else {
|
||||
if (nsnull == parent) { // found real root, replace temp
|
||||
node->mNext = gRootNode; // orphan the old root
|
||||
gRootNode = node;
|
||||
}
|
||||
else {
|
||||
ContextNode* parentNode = FindNode(parent, gRootNode);
|
||||
if (nsnull == parentNode) { // hang orhpans off root
|
||||
node->mNext = gRootNode->mNext;
|
||||
gRootNode->mNext = node;
|
||||
}
|
||||
else {
|
||||
node->mNext = parentNode->mChild;
|
||||
parentNode->mChild = node;
|
||||
}
|
||||
}
|
||||
}
|
||||
// graft orphans
|
||||
ContextNode* prevOrphan = nsnull;
|
||||
ContextNode* orphan = gRootNode;
|
||||
while (nsnull != orphan) {
|
||||
nsIStyleContext* orphanParent = orphan->mContext->GetParent();
|
||||
if (orphanParent == context) { // found our child
|
||||
if (orphan == gRootNode) {
|
||||
gRootNode = orphan->mNext;
|
||||
orphan->mNext = node->mChild;
|
||||
node->mChild = orphan;
|
||||
orphan = gRootNode;
|
||||
}
|
||||
else {
|
||||
ContextNode* foundling = orphan;
|
||||
orphan = orphan->mNext;
|
||||
prevOrphan->mNext = orphan;
|
||||
foundling->mNext = node->mChild;
|
||||
node->mChild = foundling;
|
||||
}
|
||||
}
|
||||
else {
|
||||
prevOrphan = orphan;
|
||||
orphan = orphan->mNext;
|
||||
}
|
||||
NS_IF_RELEASE(orphanParent);
|
||||
}
|
||||
NS_IF_RELEASE(parent);
|
||||
return result;
|
||||
}
|
||||
|
||||
static PRInt32 ListNode(ContextNode* aNode, FILE* out, PRInt32 aIndent)
|
||||
{
|
||||
PRInt32 count = 0;
|
||||
ContextNode* node = aNode;
|
||||
while (nsnull != node) {
|
||||
node->mContext->List(out, aIndent);
|
||||
count++;
|
||||
if (nsnull != node->mChild) {
|
||||
nsIStyleContext* childParent = node->mChild->mContext->GetParent();
|
||||
NS_ASSERTION(childParent == node->mContext, "broken graph");
|
||||
NS_RELEASE(childParent);
|
||||
count += ListNode(node->mChild, out, aIndent + 1);
|
||||
}
|
||||
node = node->mNext;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
void StyleSetImpl::ListContexts(FILE* out, PRInt32 aIndent)
|
||||
{
|
||||
mStyleContexts.Enumerate(GatherContexts);
|
||||
NS_ASSERTION(gRootNode->mNext == nsnull, "dangling orphan");
|
||||
|
||||
PRInt32 listCount = ListNode(gRootNode, out, aIndent);
|
||||
NS_ASSERTION(listCount == mStyleContexts.Count(), "graph incomplete");
|
||||
|
||||
delete gRootNode;
|
||||
gRootNode = nsnull;
|
||||
}
|
||||
|
||||
|
||||
NS_LAYOUT nsresult
|
||||
NS_NewStyleSet(nsIStyleSet** aInstancePtrResult)
|
||||
|
|
|
|||
|
|
@ -23,7 +23,6 @@
|
|||
#include "nsIFrame.h"
|
||||
#include "nsHashtable.h"
|
||||
|
||||
|
||||
static NS_DEFINE_IID(kIStyleSetIID, NS_ISTYLE_SET_IID);
|
||||
|
||||
class ContextKey : public nsHashKey {
|
||||
|
|
@ -196,6 +195,14 @@ public:
|
|||
nsIContent* aContent,
|
||||
nsIFrame* aParentFrame);
|
||||
|
||||
virtual nsIStyleContext* ResolvePseudoStyleFor(nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame);
|
||||
|
||||
virtual nsIStyleContext* ProbePseudoStyleFor(nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame);
|
||||
|
||||
// xxx style rules enumeration
|
||||
|
||||
virtual void List(FILE* out = stdout, PRInt32 aIndent = 0);
|
||||
|
|
@ -208,12 +215,20 @@ private:
|
|||
protected:
|
||||
virtual ~StyleSetImpl();
|
||||
PRBool EnsureArray(nsISupportsArray** aArray);
|
||||
nsIStyleContext* GetContext(nsIPresContext* aPresContext, nsIFrame* aParentFrame,
|
||||
nsIStyleContext* aParentContext, nsISupportsArray* aRules);
|
||||
PRInt32 RulesMatching(nsISupportsArray* aSheets,
|
||||
nsIPresContext* aPresContext,
|
||||
nsIContent* aContent,
|
||||
nsIFrame* aParentFrame,
|
||||
nsISupportsArray* aResults);
|
||||
PRInt32 RulesMatching(nsISupportsArray* aSheets,
|
||||
nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame,
|
||||
nsISupportsArray* aResults);
|
||||
void List(FILE* out, PRInt32 aIndent, nsISupportsArray* aSheets);
|
||||
void ListContexts(FILE* out, PRInt32 aIndent);
|
||||
|
||||
nsISupportsArray* mOverrideSheets;
|
||||
nsISupportsArray* mDocSheets;
|
||||
|
|
@ -445,12 +460,32 @@ PRInt32 StyleSetImpl::RulesMatching(nsISupportsArray* aSheets,
|
|||
return ruleCount;
|
||||
}
|
||||
|
||||
nsIStyleContext* StyleSetImpl::GetContext(nsIPresContext* aPresContext, nsIFrame* aParentFrame,
|
||||
nsIStyleContext* aParentContext, nsISupportsArray* aRules)
|
||||
{
|
||||
// check for cached ruleSet to context or create
|
||||
ContextKey tempKey(aParentContext, aRules);
|
||||
nsIStyleContext* result = (nsIStyleContext*)mStyleContexts.Get(&tempKey);
|
||||
if (nsnull == result) {
|
||||
if (NS_OK == NS_NewStyleContext(&result, aRules, aPresContext, aParentFrame)) {
|
||||
tempKey.SetContext(result);
|
||||
mStyleContexts.Put(&tempKey, result); // hashtable clones key, so this is OK (table gets first ref)
|
||||
NS_ADDREF(result); // add ref for the caller
|
||||
//fprintf(stdout, "+");
|
||||
}
|
||||
}
|
||||
else {
|
||||
NS_ADDREF(result);
|
||||
//fprintf(stdout, "-");
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
nsIStyleContext* StyleSetImpl::ResolveStyleFor(nsIPresContext* aPresContext,
|
||||
nsIContent* aContent,
|
||||
nsIFrame* aParentFrame)
|
||||
{
|
||||
nsIStyleContext* result = nsnull;
|
||||
|
||||
nsIStyleContext* parentContext = nsnull;
|
||||
|
||||
if (nsnull != aParentFrame) {
|
||||
|
|
@ -468,21 +503,96 @@ nsIStyleContext* StyleSetImpl::ResolveStyleFor(nsIPresContext* aPresContext,
|
|||
ruleCount += RulesMatching(mDocSheets, aPresContext, aContent, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mBackstopSheets, aPresContext, aContent, aParentFrame, rules);
|
||||
|
||||
// then check for cached ruleSet to context or create
|
||||
ContextKey tempKey(parentContext, rules);
|
||||
result = (nsIStyleContext*)mStyleContexts.Get(&tempKey);
|
||||
if (nsnull == result) {
|
||||
if (NS_OK == NS_NewStyleContext(&result, rules, aPresContext, aContent, aParentFrame)) {
|
||||
tempKey.SetContext(result);
|
||||
mStyleContexts.Put(&tempKey, result); // hashtable clones key, so this is OK (table gets first ref)
|
||||
NS_ADDREF(result); // add ref for the caller
|
||||
//fprintf(stdout, "+");
|
||||
result = GetContext(aPresContext, aParentFrame, parentContext, rules);
|
||||
|
||||
NS_RELEASE(rules);
|
||||
}
|
||||
|
||||
NS_IF_RELEASE(parentContext);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
PRInt32 StyleSetImpl::RulesMatching(nsISupportsArray* aSheets,
|
||||
nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame,
|
||||
nsISupportsArray* aResults)
|
||||
{
|
||||
PRInt32 ruleCount = 0;
|
||||
|
||||
if (nsnull != aSheets) {
|
||||
PRInt32 sheetCount = aSheets->Count();
|
||||
PRInt32 index;
|
||||
for (index = 0; index < sheetCount; index++) {
|
||||
nsIStyleSheet* sheet = (nsIStyleSheet*)aSheets->ElementAt(index);
|
||||
ruleCount += sheet->RulesMatching(aPresContext, aPseudoTag, aParentFrame,
|
||||
aResults);
|
||||
NS_RELEASE(sheet);
|
||||
}
|
||||
}
|
||||
else {
|
||||
NS_ADDREF(result);
|
||||
//fprintf(stdout, "-");
|
||||
return ruleCount;
|
||||
}
|
||||
|
||||
nsIStyleContext* StyleSetImpl::ResolvePseudoStyleFor(nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame)
|
||||
{
|
||||
nsIStyleContext* result = nsnull;
|
||||
nsIStyleContext* parentContext = nsnull;
|
||||
|
||||
if (nsnull != aParentFrame) {
|
||||
aParentFrame->GetStyleContext(aPresContext, parentContext);
|
||||
NS_ASSERTION(nsnull != parentContext, "parent must have style context");
|
||||
}
|
||||
|
||||
// want to check parent frame's context for cached child context first
|
||||
|
||||
// then do a brute force rule search
|
||||
|
||||
nsISupportsArray* rules = nsnull;
|
||||
if (NS_OK == NS_NewISupportsArray(&rules)) {
|
||||
PRInt32 ruleCount = RulesMatching(mOverrideSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mDocSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mBackstopSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
|
||||
result = GetContext(aPresContext, aParentFrame, parentContext, rules);
|
||||
|
||||
NS_RELEASE(rules);
|
||||
}
|
||||
|
||||
NS_IF_RELEASE(parentContext);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
nsIStyleContext* StyleSetImpl::ProbePseudoStyleFor(nsIPresContext* aPresContext,
|
||||
nsIAtom* aPseudoTag,
|
||||
nsIFrame* aParentFrame)
|
||||
{
|
||||
nsIStyleContext* result = nsnull;
|
||||
nsIStyleContext* parentContext = nsnull;
|
||||
|
||||
if (nsnull != aParentFrame) {
|
||||
aParentFrame->GetStyleContext(aPresContext, parentContext);
|
||||
NS_ASSERTION(nsnull != parentContext, "parent must have style context");
|
||||
}
|
||||
|
||||
// want to check parent frame's context for cached child context first
|
||||
|
||||
// then do a brute force rule search
|
||||
|
||||
nsISupportsArray* rules = nsnull;
|
||||
if (NS_OK == NS_NewISupportsArray(&rules)) {
|
||||
PRInt32 ruleCount = RulesMatching(mOverrideSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mDocSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
ruleCount += RulesMatching(mBackstopSheets, aPresContext, aPseudoTag, aParentFrame, rules);
|
||||
|
||||
if (0 < ruleCount) {
|
||||
result = GetContext(aPresContext, aParentFrame, parentContext, rules);
|
||||
}
|
||||
|
||||
NS_RELEASE(rules);
|
||||
}
|
||||
|
||||
|
|
@ -512,6 +622,135 @@ void StyleSetImpl::List(FILE* out, PRInt32 aIndent)
|
|||
List(out, aIndent, mBackstopSheets);
|
||||
}
|
||||
|
||||
struct ContextNode {
|
||||
nsIStyleContext* mContext;
|
||||
ContextNode* mNext;
|
||||
ContextNode* mChild;
|
||||
ContextNode(nsIStyleContext* aContext)
|
||||
{
|
||||
mContext = aContext;
|
||||
mNext = nsnull;
|
||||
mChild = nsnull;
|
||||
}
|
||||
~ContextNode(void)
|
||||
{
|
||||
if (nsnull != mNext) {
|
||||
delete mNext;
|
||||
}
|
||||
if (nsnull != mChild) {
|
||||
delete mChild;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
static ContextNode* gRootNode;
|
||||
|
||||
static ContextNode* FindNode(nsIStyleContext* aContext, ContextNode* aStart)
|
||||
{
|
||||
ContextNode* node = aStart;
|
||||
while (nsnull != node) {
|
||||
if (node->mContext == aContext) {
|
||||
return node;
|
||||
}
|
||||
if (nsnull != node->mChild) {
|
||||
ContextNode* result = FindNode(aContext, node->mChild);
|
||||
if (nsnull != result) {
|
||||
return result;
|
||||
}
|
||||
}
|
||||
node = node->mNext;
|
||||
}
|
||||
return nsnull;
|
||||
}
|
||||
|
||||
PRBool GatherContexts(nsHashKey *aKey, void *aData)
|
||||
{
|
||||
PRBool result = PR_TRUE;
|
||||
|
||||
nsIStyleContext* context = (nsIStyleContext*)aData;
|
||||
nsIStyleContext* parent = context->GetParent();
|
||||
ContextNode* node = new ContextNode(context);
|
||||
|
||||
if (nsnull == gRootNode) {
|
||||
gRootNode = node;
|
||||
}
|
||||
else {
|
||||
if (nsnull == parent) { // found real root, replace temp
|
||||
node->mNext = gRootNode; // orphan the old root
|
||||
gRootNode = node;
|
||||
}
|
||||
else {
|
||||
ContextNode* parentNode = FindNode(parent, gRootNode);
|
||||
if (nsnull == parentNode) { // hang orhpans off root
|
||||
node->mNext = gRootNode->mNext;
|
||||
gRootNode->mNext = node;
|
||||
}
|
||||
else {
|
||||
node->mNext = parentNode->mChild;
|
||||
parentNode->mChild = node;
|
||||
}
|
||||
}
|
||||
}
|
||||
// graft orphans
|
||||
ContextNode* prevOrphan = nsnull;
|
||||
ContextNode* orphan = gRootNode;
|
||||
while (nsnull != orphan) {
|
||||
nsIStyleContext* orphanParent = orphan->mContext->GetParent();
|
||||
if (orphanParent == context) { // found our child
|
||||
if (orphan == gRootNode) {
|
||||
gRootNode = orphan->mNext;
|
||||
orphan->mNext = node->mChild;
|
||||
node->mChild = orphan;
|
||||
orphan = gRootNode;
|
||||
}
|
||||
else {
|
||||
ContextNode* foundling = orphan;
|
||||
orphan = orphan->mNext;
|
||||
prevOrphan->mNext = orphan;
|
||||
foundling->mNext = node->mChild;
|
||||
node->mChild = foundling;
|
||||
}
|
||||
}
|
||||
else {
|
||||
prevOrphan = orphan;
|
||||
orphan = orphan->mNext;
|
||||
}
|
||||
NS_IF_RELEASE(orphanParent);
|
||||
}
|
||||
NS_IF_RELEASE(parent);
|
||||
return result;
|
||||
}
|
||||
|
||||
static PRInt32 ListNode(ContextNode* aNode, FILE* out, PRInt32 aIndent)
|
||||
{
|
||||
PRInt32 count = 0;
|
||||
ContextNode* node = aNode;
|
||||
while (nsnull != node) {
|
||||
node->mContext->List(out, aIndent);
|
||||
count++;
|
||||
if (nsnull != node->mChild) {
|
||||
nsIStyleContext* childParent = node->mChild->mContext->GetParent();
|
||||
NS_ASSERTION(childParent == node->mContext, "broken graph");
|
||||
NS_RELEASE(childParent);
|
||||
count += ListNode(node->mChild, out, aIndent + 1);
|
||||
}
|
||||
node = node->mNext;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
void StyleSetImpl::ListContexts(FILE* out, PRInt32 aIndent)
|
||||
{
|
||||
mStyleContexts.Enumerate(GatherContexts);
|
||||
NS_ASSERTION(gRootNode->mNext == nsnull, "dangling orphan");
|
||||
|
||||
PRInt32 listCount = ListNode(gRootNode, out, aIndent);
|
||||
NS_ASSERTION(listCount == mStyleContexts.Count(), "graph incomplete");
|
||||
|
||||
delete gRootNode;
|
||||
gRootNode = nsnull;
|
||||
}
|
||||
|
||||
|
||||
NS_LAYOUT nsresult
|
||||
NS_NewStyleSet(nsIStyleSet** aInstancePtrResult)
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче