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Use deep first/last child for Beginning/EndOfDocument methods

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git-svn-id: svn://10.0.0.236/trunk@36345 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
akkana%netscape.com
1999-06-22 21:42:44 +00:00
parent 1cd979f934
commit 4120467dac
4 changed files with 178 additions and 24 deletions
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96
mozilla/editor/base/nsEditor.cpp
View File

@@ -582,7 +582,7 @@ nsEditor::Init(nsIDOMDocument *aDoc, nsIPresShell* aPresShell)
mPresShell->SetCaretEnabled(PR_TRUE);
// Set the selection to the beginning, to make sure we have one:
// Set the selection to the beginning:
BeginningOfDocument();
NS_POSTCONDITION(mDoc && mPresShell, "bad state");
@@ -1045,6 +1045,36 @@ NS_IMETHODIMP nsEditor::SelectAll()
return result;
}
//
// GetDeepFirst/LastChild borrowed from nsContentIterator
//
nsCOMPtr<nsIDOMNode>
nsEditor::GetDeepFirstChild(nsCOMPtr<nsIDOMNode> aRoot)
{
nsCOMPtr<nsIContent> deepFirstChild;
if (aRoot)
{
nsCOMPtr<nsIContent> cN (do_QueryInterface(aRoot));
nsCOMPtr<nsIContent> cChild;
cN->ChildAt(0,*getter_AddRefs(cChild));
while ( cChild )
{
cN = cChild;
nsCOMPtr<nsIDOMNode> cChildN;
int i = 0;
do {
cN->ChildAt(i++, *getter_AddRefs(cChild));
cChildN = do_QueryInterface(cChild);
} while (cChild && cChildN && !IsEditable(cChildN));
}
deepFirstChild = cN;
}
nsCOMPtr<nsIDOMNode> deepFirstChildN (do_QueryInterface(deepFirstChild));
return deepFirstChildN;
}
NS_IMETHODIMP nsEditor::BeginningOfDocument()
{
#ifdef ENABLE_JS_EDITOR_LOG
@@ -1073,9 +1103,8 @@ NS_IMETHODIMP nsEditor::BeginningOfDocument()
if ((NS_SUCCEEDED(result)) && bodyNode)
{
// Get the first child of the body node:
nsCOMPtr<nsIDOMNode> firstNode;
result = bodyNode->GetFirstChild(getter_AddRefs(firstNode));
if (NS_SUCCEEDED(result))
nsCOMPtr<nsIDOMNode> firstNode = GetDeepFirstChild(bodyNode);
if (firstNode)
{
result = selection->Collapse(firstNode, 0);
ScrollIntoView(PR_TRUE);
@@ -1086,6 +1115,44 @@ NS_IMETHODIMP nsEditor::BeginningOfDocument()
return result;
}
nsCOMPtr<nsIDOMNode>
nsEditor::GetDeepLastChild(nsCOMPtr<nsIDOMNode> aRoot)
{
nsCOMPtr<nsIContent> deepLastChild;
if (aRoot)
{
nsCOMPtr<nsIContent> cN (do_QueryInterface(aRoot));
nsCOMPtr<nsIContent> cChild;
PRInt32 numChildren;
cN->ChildCount(numChildren);
while ( numChildren )
{
nsCOMPtr<nsIDOMNode> cChildN;
do {
cN->ChildAt(--numChildren, *getter_AddRefs(cChild));
cChildN = (do_QueryInterface(cChild));
} while (cChild && !IsEditable(cChildN));
if (cChild)
{
cChild->ChildCount(numChildren);
cN = cChild;
}
else
{
break;
}
}
deepLastChild = cN;
}
nsCOMPtr<nsIDOMNode> deepLastChildN (do_QueryInterface(deepLastChild));
return deepLastChildN;
}
NS_IMETHODIMP nsEditor::EndOfDocument()
{
#ifdef ENABLE_JS_EDITOR_LOG
@@ -1113,14 +1180,18 @@ NS_IMETHODIMP nsEditor::EndOfDocument()
result = nodeList->Item(0, getter_AddRefs(bodyNode));
if ((NS_SUCCEEDED(result)) && bodyNode)
{
nsCOMPtr<nsIDOMNode> lastChild;
result = bodyNode->GetLastChild(getter_AddRefs(lastChild));
nsCOMPtr<nsIDOMNode> lastChild = GetDeepLastChild(bodyNode);
if ((NS_SUCCEEDED(result)) && lastChild)
{
// XXX this is wrong, should iterate to collapse to
// XXX last child of last child of last ...
// XXX instead of beginning of last child of body.
result = selection->Collapse(lastChild, 0);
// See if the last child is a text node; if so, set offset:
PRUint32 offset = 0;
if (IsTextNode(lastChild))
{
nsCOMPtr<nsIDOMText> text (do_QueryInterface(lastChild));
if (text)
text->GetLength(&offset);
}
result = selection->Collapse(lastChild, offset);
ScrollIntoView(PR_FALSE);
}
}
@@ -3833,7 +3904,7 @@ nsEditor::IsPreformatted(nsIDOMNode *aNode, PRBool *aResult)
if (!aResult || !content) return NS_ERROR_NULL_POINTER;
if (!mPresShell) return NS_ERROR_NULL_POINTER;
if (!mPresShell) return NS_ERROR_NOT_INITIALIZED;
result = mPresShell->GetPrimaryFrameFor(content, &frame);
if (NS_FAILED(result)) return result;
@@ -4135,7 +4206,8 @@ nsAutoSelectionReset::nsAutoSelectionReset(nsIDOMSelection *aSel)
mSel->GetAnchorOffset(&mStartOffset);
mSel->GetFocusNode(getter_AddRefs(mEndNode));
mSel->GetFocusOffset(&mEndOffset);
mInitialized = PR_TRUE;
if (mStartNode && mEndNode)
mInitialized = PR_TRUE;
}
}

5
mozilla/editor/base/nsEditor.h
View File

@@ -510,6 +510,11 @@ public:
/** returns PR_TRUE if aNode is an editable node */
static PRBool IsEditable(nsIDOMNode *aNode);
/** Find the deep first and last children */
static nsCOMPtr<nsIDOMNode> GetDeepFirstChild(nsCOMPtr<nsIDOMNode> aRoot);
static nsCOMPtr<nsIDOMNode> GetDeepLastChild(nsCOMPtr<nsIDOMNode> aRoot);
/** from html rules code - migration in progress */
static nsresult GetTagString(nsIDOMNode *aNode, nsString& outString);
static nsCOMPtr<nsIAtom> GetTag(nsIDOMNode *aNode);

96
mozilla/editor/libeditor/base/nsEditor.cpp
View File

@@ -582,7 +582,7 @@ nsEditor::Init(nsIDOMDocument *aDoc, nsIPresShell* aPresShell)
mPresShell->SetCaretEnabled(PR_TRUE);
// Set the selection to the beginning, to make sure we have one:
// Set the selection to the beginning:
BeginningOfDocument();
NS_POSTCONDITION(mDoc && mPresShell, "bad state");
@@ -1045,6 +1045,36 @@ NS_IMETHODIMP nsEditor::SelectAll()
return result;
}
//
// GetDeepFirst/LastChild borrowed from nsContentIterator
//
nsCOMPtr<nsIDOMNode>
nsEditor::GetDeepFirstChild(nsCOMPtr<nsIDOMNode> aRoot)
{
nsCOMPtr<nsIContent> deepFirstChild;
if (aRoot)
{
nsCOMPtr<nsIContent> cN (do_QueryInterface(aRoot));
nsCOMPtr<nsIContent> cChild;
cN->ChildAt(0,*getter_AddRefs(cChild));
while ( cChild )
{
cN = cChild;
nsCOMPtr<nsIDOMNode> cChildN;
int i = 0;
do {
cN->ChildAt(i++, *getter_AddRefs(cChild));
cChildN = do_QueryInterface(cChild);
} while (cChild && cChildN && !IsEditable(cChildN));
}
deepFirstChild = cN;
}
nsCOMPtr<nsIDOMNode> deepFirstChildN (do_QueryInterface(deepFirstChild));
return deepFirstChildN;
}
NS_IMETHODIMP nsEditor::BeginningOfDocument()
{
#ifdef ENABLE_JS_EDITOR_LOG
@@ -1073,9 +1103,8 @@ NS_IMETHODIMP nsEditor::BeginningOfDocument()
if ((NS_SUCCEEDED(result)) && bodyNode)
{
// Get the first child of the body node:
nsCOMPtr<nsIDOMNode> firstNode;
result = bodyNode->GetFirstChild(getter_AddRefs(firstNode));
if (NS_SUCCEEDED(result))
nsCOMPtr<nsIDOMNode> firstNode = GetDeepFirstChild(bodyNode);
if (firstNode)
{
result = selection->Collapse(firstNode, 0);
ScrollIntoView(PR_TRUE);
@@ -1086,6 +1115,44 @@ NS_IMETHODIMP nsEditor::BeginningOfDocument()
return result;
}
nsCOMPtr<nsIDOMNode>
nsEditor::GetDeepLastChild(nsCOMPtr<nsIDOMNode> aRoot)
{
nsCOMPtr<nsIContent> deepLastChild;
if (aRoot)
{
nsCOMPtr<nsIContent> cN (do_QueryInterface(aRoot));
nsCOMPtr<nsIContent> cChild;
PRInt32 numChildren;
cN->ChildCount(numChildren);
while ( numChildren )
{
nsCOMPtr<nsIDOMNode> cChildN;
do {
cN->ChildAt(--numChildren, *getter_AddRefs(cChild));
cChildN = (do_QueryInterface(cChild));
} while (cChild && !IsEditable(cChildN));
if (cChild)
{
cChild->ChildCount(numChildren);
cN = cChild;
}
else
{
break;
}
}
deepLastChild = cN;
}
nsCOMPtr<nsIDOMNode> deepLastChildN (do_QueryInterface(deepLastChild));
return deepLastChildN;
}
NS_IMETHODIMP nsEditor::EndOfDocument()
{
#ifdef ENABLE_JS_EDITOR_LOG
@@ -1113,14 +1180,18 @@ NS_IMETHODIMP nsEditor::EndOfDocument()
result = nodeList->Item(0, getter_AddRefs(bodyNode));
if ((NS_SUCCEEDED(result)) && bodyNode)
{
nsCOMPtr<nsIDOMNode> lastChild;
result = bodyNode->GetLastChild(getter_AddRefs(lastChild));
nsCOMPtr<nsIDOMNode> lastChild = GetDeepLastChild(bodyNode);
if ((NS_SUCCEEDED(result)) && lastChild)
{
// XXX this is wrong, should iterate to collapse to
// XXX last child of last child of last ...
// XXX instead of beginning of last child of body.
result = selection->Collapse(lastChild, 0);
// See if the last child is a text node; if so, set offset:
PRUint32 offset = 0;
if (IsTextNode(lastChild))
{
nsCOMPtr<nsIDOMText> text (do_QueryInterface(lastChild));
if (text)
text->GetLength(&offset);
}
result = selection->Collapse(lastChild, offset);
ScrollIntoView(PR_FALSE);
}
}
@@ -3833,7 +3904,7 @@ nsEditor::IsPreformatted(nsIDOMNode *aNode, PRBool *aResult)
if (!aResult || !content) return NS_ERROR_NULL_POINTER;
if (!mPresShell) return NS_ERROR_NULL_POINTER;
if (!mPresShell) return NS_ERROR_NOT_INITIALIZED;
result = mPresShell->GetPrimaryFrameFor(content, &frame);
if (NS_FAILED(result)) return result;
@@ -4135,7 +4206,8 @@ nsAutoSelectionReset::nsAutoSelectionReset(nsIDOMSelection *aSel)
mSel->GetAnchorOffset(&mStartOffset);
mSel->GetFocusNode(getter_AddRefs(mEndNode));
mSel->GetFocusOffset(&mEndOffset);
mInitialized = PR_TRUE;
if (mStartNode && mEndNode)
mInitialized = PR_TRUE;
}
}

5
mozilla/editor/libeditor/base/nsEditor.h
View File

@@ -510,6 +510,11 @@ public:
/** returns PR_TRUE if aNode is an editable node */
static PRBool IsEditable(nsIDOMNode *aNode);
/** Find the deep first and last children */
static nsCOMPtr<nsIDOMNode> GetDeepFirstChild(nsCOMPtr<nsIDOMNode> aRoot);
static nsCOMPtr<nsIDOMNode> GetDeepLastChild(nsCOMPtr<nsIDOMNode> aRoot);
/** from html rules code - migration in progress */
static nsresult GetTagString(nsIDOMNode *aNode, nsString& outString);
static nsCOMPtr<nsIAtom> GetTag(nsIDOMNode *aNode);