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fix for bug #387007: with lots of places data on the clipboard, command update is very slow: Places inefficiently determines whether or not it is able to paste patch=Christine Yen <christineyen+bugs@gmail.com> r=sspitzer

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sspitzer@mozilla.org 2007-08-11 09:08:52 -07:00
parent 4eac080665
commit e9786b6582
1 changed files with 36 additions and 40 deletions
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68
browser/components/places/content/controller.js
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@ -104,7 +104,7 @@ PlacesController.prototype = {
case "cmd_copy":
return this._view.hasSelection;
case "cmd_paste":
return this._canInsert() && this._canPaste();
return this._canInsert() && this._isClipboardDataPasteable();
case "cmd_selectAll":
if (this._view.selType != "single") {
var result = this._view.getResult();
@ -386,49 +386,48 @@ PlacesController.prototype = {
* Looks at the data on the clipboard to see if it is paste-able.
* Paste-able data is:
* - in a format that the view can receive
* @returns true if the data is paste-able, false if the clipboard data
* cannot be pasted
* @returns true if: - clipboard data is of a TYPE_X_MOZ_PLACE_* flavor,
- clipboard data is of type TEXT_UNICODE and
is a valid URI.
*/
_canPaste: function PC__canPaste() {
var types = this._view.peerDropTypes;
var flavors =
Cc["@mozilla.org/supports-array;1"].
createInstance(Ci.nsISupportsArray);
for (var i = 0; i < types.length; ++i) {
var cstring =
Cc["@mozilla.org/supports-cstring;1"].
createInstance(Ci.nsISupportsCString);
cstring.data = types[i];
_isClipboardDataPasteable: function PC__isClipboardDataPasteable() {
// if the clipboard contains TYPE_X_MOZ_PLACE_* data, it is definitely
// pasteable, with no need to unwrap all the nodes.
var placeTypes = [PlacesUtils.TYPE_X_MOZ_PLACE_CONTAINER,
PlacesUtils.TYPE_X_MOZ_PLACE_SEPARATOR,
PlacesUtils.TYPE_X_MOZ_PLACE];
var flavors = Cc["@mozilla.org/supports-array;1"].
createInstance(Ci.nsISupportsArray);
for (var i = 0; i < placeTypes.length; ++i) {
var cstring = Cc["@mozilla.org/supports-cstring;1"].
createInstance(Ci.nsISupportsCString);
cstring.data = placeTypes[i];
flavors.AppendElement(cstring);
}
var clipboard =
Cc["@mozilla.org/widget/clipboard;1"].getService(Ci.nsIClipboard);
var hasClipboardData = clipboard.hasDataMatchingFlavors(flavors,
var clipboard = Cc["@mozilla.org/widget/clipboard;1"].
getService(Ci.nsIClipboard);
var hasPlacesData = clipboard.hasDataMatchingFlavors(flavors,
Ci.nsIClipboard.kGlobalClipboard);
if (!hasClipboardData)
return false;
if (hasPlacesData)
return this._view.insertionPoint != null;
// XXX todo
// see bug #387007 for an idea on how to make this more efficient
// right now, we are pulling data off the clipboard and using
// unwrapNodes() to verify it.
// if the clipboard doesn't have TYPE_X_MOZ_PLACE_* data, we also allow
// pasting of valid "text/unicode" and "text/x-moz-url" data
var xferable = Cc["@mozilla.org/widget/transferable;1"].
createInstance(Ci.nsITransferable);
var xferable =
Cc["@mozilla.org/widget/transferable;1"].
createInstance(Ci.nsITransferable);
for (var j = 0; j < types.length; ++j) {
xferable.addDataFlavor(types[j]);
}
xferable.addDataFlavor(PlacesUtils.TYPE_X_MOZ_URL);
xferable.addDataFlavor(PlacesUtils.TYPE_UNICODE);
clipboard.getData(xferable, Ci.nsIClipboard.kGlobalClipboard);
try {
// getAnyTransferData can throw if no data is available.
// getAnyTransferData will throw if no data is available.
var data = { }, type = { };
xferable.getAnyTransferData(type, data, { });
data = data.value.QueryInterface(Ci.nsISupportsString).data;
if (this._view.peerDropTypes.indexOf(type.value) == -1)
if (type.value != PlacesUtils.TYPE_X_MOZ_URL &&
type.value != PlacesUtils.TYPE_UNICODE)
return false;
// unwrapNodes() will throw if the data blob is malformed.
@ -436,12 +435,9 @@ PlacesController.prototype = {
return this._view.insertionPoint != null;
}
catch (e) {
// unwrapeNodes() failed, possibly because a field that should have
// contained a URI did not actually contain something that is
// parse-able as a URI.
// getAnyTransferData or unwrapNodes failed
return false;
}
return false;
},
/**