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Code Issues Releases Wiki Activity

Allow widgets to choose not to propagate actions

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Allow widgets to choose not to propagate actions. This is important for
widgets that themselves trigger actions.

Note that this change will cause problems with any existing
5.1.8-prerelease plugins that call `invokeActions()`.
This commit is contained in:
Jermolene 2015-03-25 22:13:22 +00:00
parent 055a38ea4c
commit 758ba5edc2
2 changed files with 22 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
core/modules/widgets/button.js
View File

@ -63,7 +63,7 @@ ButtonWidget.prototype.render = function(parent,nextSibling) {
// Add a click event handler
domNode.addEventListener("click",function (event) {
var handled = false;
if(self.invokeActions(event)) {
if(self.invokeActions(this,event)) {
handled = true;
}
if(self.to) {
@ -94,6 +94,13 @@ ButtonWidget.prototype.render = function(parent,nextSibling) {
this.domNodes.push(domNode);
};
/*
We don't allow actions to propagate because we trigger actions ourselves
*/
ButtonWidget.prototype.allowActionPropagation = function() {
return false;
};
ButtonWidget.prototype.getBoundingClientRect = function() {
return this.domNodes[0].getBoundingClientRect();
}

27
core/modules/widgets/widget.js
View File

@ -476,29 +476,30 @@ Widget.prototype.removeChildDomNodes = function() {
};
/*
Invoke any action widgets that are descendants of this widget.
Invoke the action widgets that are descendents of the current widget.
*/
Widget.prototype.invokeActions = function(event) {
return this.invokeActionCall(this,event);
};
/*
Recursively search through descendants, invoking all actions encountered.
*/
Widget.prototype.invokeActionCall = function(here,event) {
Widget.prototype.invokeActions = function(triggeringWidget,event) {
var handled = false;
for(var t=0; t<here.children.length; t++) {
var child = here.children[t];
if(child.invokeAction && child.invokeAction(this,event)) {
// For each child widget
for(var t=0; t<this.children.length; t++) {
var child = this.children[t];
// Invoke the child if it is an action widget
if(child.invokeAction && child.invokeAction(triggeringWidget,event)) {
handled = true;
}
if(this.invokeActionCall(child,event)) {
// Propagate through through the child if it permits it
if(child.allowActionPropagation() && child.invokeActions(triggeringWidget,event)) {
handled = true;
}
}
return handled;
};
Widget.prototype.allowActionPropagation = function() {
return true;
};
exports.widget = Widget;
})();