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44684: adding a "GetAlignment" call to the editor so that ui can reflect alignment of selection

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git-svn-id: svn://10.0.0.236/trunk@76535 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
jfrancis%netscape.com
2000-08-17 03:59:50 +00:00
parent 3ae9cffa35
commit 3a6540f7dd
2 changed files with 152 additions and 2 deletions
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77
mozilla/editor/libeditor/html/nsHTMLEditRules.cpp
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@@ -458,7 +458,82 @@ nsHTMLEditRules::GetListItemState(PRBool &aMixed, PRBool &aLI, PRBool &aDT, PRBo
NS_IMETHODIMP
nsHTMLEditRules::GetAlignment(PRBool &aMixed, nsIHTMLEditor::EAlignment &aAlign)
{
return NS_ERROR_NOT_IMPLEMENTED;
// for now, just return first alignment. we'll lie about
// if it's mixed. This is for efficiency, given that our
// current ui doesn't care if it's mixed.
// this routine assumes that alignment is done ONLY via divs
// default alignment is left
aAlign = nsIHTMLEditor::eLeft;
// get selection
nsCOMPtr<nsIDOMSelection>selection;
nsresult res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
// get selection location
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
res = mEditor->GetStartNodeAndOffset(selection, &parent, &offset);
if (NS_FAILED(res)) return res;
// is the selection collapsed?
PRBool bCollapsed;
res = selection->GetIsCollapsed(&bCollapsed);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> nodeToExamine;
if (bCollapsed)
{
// if it is, we want to look at 'parent' and it's ancestors
// for divs with alignment on them
nodeToExamine = parent;
}
else if (mEditor->IsTextNode(parent))
{
// if we are in a text node, then that is the node of interest
nodeToExamine = parent;
}
else
{
// otherwise we want to look at the first editable node after
// {parent,offset} and it's ancestors for divs with alignment on them
mEditor->GetNextNode(parent, offset, PR_TRUE, getter_AddRefs(nodeToExamine));
}
if (!nodeToExamine) return NS_ERROR_NULL_POINTER;
// check up the ladder for divs with alignment
nsCOMPtr<nsIDOMNode> temp = nodeToExamine;
while (nodeToExamine)
{
if (nsHTMLEditUtils::IsDiv(nodeToExamine))
{
// check for alignment
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(nodeToExamine);
if (elem)
{
nsAutoString typeAttrName; typeAttrName.AssignWithConversion("align");
nsAutoString typeAttrVal;
nsresult res = elem->GetAttribute(typeAttrName, typeAttrVal);
typeAttrVal.ToLowerCase();
if (NS_SUCCEEDED(res) && typeAttrVal.Length())
{
if (typeAttrVal.EqualsWithConversion("center"))
aAlign = nsIHTMLEditor::eCenter;
else if (typeAttrVal.EqualsWithConversion("right"))
aAlign = nsIHTMLEditor::eRight;
else
aAlign = nsIHTMLEditor::eLeft;
return res;
}
}
}
res = nodeToExamine->GetParentNode(getter_AddRefs(temp));
if (NS_FAILED(res)) temp = nsnull;
nodeToExamine = temp;
}
return NS_OK;
}
NS_IMETHODIMP