/usr/share/javascript/dijit/Destroyable.js is in libjs-dojo-dijit 1.11.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | define("dijit/Destroyable", [
"dojo/_base/array", // array.forEach array.map
"dojo/aspect",
"dojo/_base/declare"
], function(array, aspect, declare){
// module:
// dijit/Destroyable
return declare("dijit.Destroyable", null, {
// summary:
// Mixin to track handles and release them when instance is destroyed.
// description:
// Call this.own(...) on list of handles (returned from dojo/aspect, dojo/on,
// dojo/Stateful::watch, or any class (including widgets) with a destroyRecursive() or destroy() method.
// Then call destroy() later to destroy this instance and release the resources.
destroy: function(/*Boolean*/ preserveDom){
// summary:
// Destroy this class, releasing any resources registered via own().
this._destroyed = true;
},
own: function(){
// summary:
// Track specified handles and remove/destroy them when this instance is destroyed, unless they were
// already removed/destroyed manually.
// tags:
// protected
// returns:
// The array of specified handles, so you can do for example:
// | var handle = this.own(on(...))[0];
var cleanupMethods = [
"destroyRecursive",
"destroy",
"remove"
];
array.forEach(arguments, function(handle){
// When this.destroy() is called, destroy handle. Since I'm using aspect.before(),
// the handle will be destroyed before a subclass's destroy() method starts running, before it calls
// this.inherited() or even if it doesn't call this.inherited() at all. If that's an issue, make an
// onDestroy() method and connect to that instead.
var destroyMethodName;
var odh = aspect.before(this, "destroy", function (preserveDom){
handle[destroyMethodName](preserveDom);
});
// Callback for when handle is manually destroyed.
var hdhs = [];
function onManualDestroy(){
odh.remove();
array.forEach(hdhs, function(hdh){
hdh.remove();
});
}
// Setup listeners for manual destroy of handle.
// Also computes destroyMethodName, used in listener above.
if(handle.then){
// Special path for Promises. Detect when Promise is resolved, rejected, or
// canceled (nb: cancelling a Promise causes it to be rejected).
destroyMethodName = "cancel";
handle.then(onManualDestroy, onManualDestroy);
}else{
// Path for other handles. Just use AOP to detect when handle is manually destroyed.
array.forEach(cleanupMethods, function(cleanupMethod){
if(typeof handle[cleanupMethod] === "function"){
if(!destroyMethodName){
// Use first matching method name in above listener (prefer destroyRecursive() to destroy())
destroyMethodName = cleanupMethod;
}
hdhs.push(aspect.after(handle, cleanupMethod, onManualDestroy, true));
}
});
}
}, this);
return arguments; // handle
}
});
});
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