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add a function to handle dragging all types of data in the content area (not used yet; not complete yet)

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brade%netscape.com 2000-04-20 14:00:15 +00:00
parent 65686de7fb
commit a857aa0d4c
1 changed files with 118 additions and 2 deletions
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120
xpfe/browser/resources/content/navigatorDD.js
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@ -272,6 +272,109 @@ function DragOverPersonalToolbar ( event )
} // DragOverPersonalToolbar
//
// BeginDragContentArea
//
function BeginDragContentArea ( event )
{
if ( !gDragDropEnabled )
return;
dump ("in content area; starting drag\n");
var dragStarted = false;
var dragService = Components.classes["component://netscape/widget/dragservice"].getService(Components.interfaces.nsIDragService);
if ( dragService )
{
var trans = Components.classes["component://netscape/widget/transferable"].createInstance(Components.interfaces.nsITransferable);
if ( trans )
{
var src = null;
var htmlData = Components.classes["component://netscape/supports-wstring"].createInstance(Components.interfaces.nsISupportsWString);
if ( htmlData )
{
trans.addDataFlavor("text/html");
var htmlstring = null;
switch (event.target.nodeName)
{
case 'AREA':
case 'IMG':
var imgsrc = event.target.getAttribute("src");
var baseurl = window.content.location.href;
src = baseurl + imgsrc;
htmlstring = "<IMG src=\"" + src + "\">";
dump("src is "+src+"\n");
dump("htmlstring is "+htmlstring+"\n");
break;
case 'HR':
break;
case 'A':
if ( event.target.href )
{
// link
src = event.target.getAttribute("href");
htmlstring = "<A href=\"" + src + "\">" + src + "</A>";
}
else if (event.target.name )
{
// named anchor
src = event.target.getAttribute("name");
htmlstring = "<A name=\"" + src + "\">" + src + "</A>"
}
break;
default:
dump("no handler found for " + event.target.nodeName + "\n");
case '#text':
case 'LI':
case 'OL':
case 'DD':
src = enclosingLink(event.target);
if ( src != "" )
htmlstring = "<A href=\"" + src + "\">" + src + "</A>";
else
htmlstring = "<p>no html tag or link found; found "+event.target.nodeName;
break;
}
htmlData.data = htmlstring;
trans.setTransferData ( "text/html", htmlData, htmlstring.length*2 ); // double byte data (len*2)
}
var genTextData =
Components.classes["component://netscape/supports-wstring"].createInstance(Components.interfaces.nsISupportsWString);
if ( genTextData && src != "")
{
trans.addDataFlavor("text/unicode");
genTextData.data = src; // should have been set if we had html
trans.setTransferData ( "text/unicode", genTextData, src.length*2 ); // double byte data
}
var transArray = Components.classes["component://netscape/supports-array"].createInstance(Components.interfaces.nsISupportsArray);
if ( transArray )
{
// put it into the transferable as an |nsISupports|
var genTrans = trans.QueryInterface(Components.interfaces.nsISupports);
transArray.AppendElement(genTrans);
var nsIDragService = Components.interfaces.nsIDragService;
dragService.invokeDragSession ( transArray, null, nsIDragService.DRAGDROP_ACTION_COPY +
nsIDragService.DRAGDROP_ACTION_MOVE );
dragStarted = true;
}
} // if transferable
} // if drag service
if ( dragStarted ) // don't propagate the event if a drag has begun
event.preventBubble();
return true;
}
//
// DragOverContentArea
//
@ -372,7 +475,6 @@ function DragProxyIcon ( event )
var trans =
Components.classes["component://netscape/widget/transferable"].createInstance(Components.interfaces.nsITransferable);
if ( trans ) {
trans.addDataFlavor("text/unicode");
var genTextData =
Components.classes["component://netscape/supports-wstring"].createInstance(Components.interfaces.nsISupportsWString);
if ( genTextData ) {
@ -381,12 +483,26 @@ function DragProxyIcon ( event )
var urlBar = document.getElementById ( "urlbar" );
if ( !urlBar )
return;
var id = urlBar.value
var id = urlBar.value;
genTextData.data = id;
dump("ID: " + id + "\n");
// add text/html flavor first
var htmlData = Components.classes["component://netscape/supports-wstring"].createInstance();
if ( htmlData )
htmlData = htmlData.QueryInterface(Components.interfaces.nsISupportsWString);
if ( htmlData ) {
var htmlstring = "<A href=\"" + genTextData + "\">" + genTextData + "</A>";
htmlData.data = htmlstring;
trans.addDataFlavor("text/html");
trans.setTransferData( "text/html", htmlData, htmlstring.length * 2);
}
// add the text/unicode flavor
trans.addDataFlavor("text/unicode");
trans.setTransferData ( "text/unicode", genTextData, id.length * 2 ); // double byte data
var transArray =
Components.classes["component://netscape/supports-array"].createInstance(Components.interfaces.nsISupportsArray);
if ( transArray ) {