[patch][cla]Support for suspend/resume in a widget

[iDo]

Add support to all dijit._Widget for suspend / resume themselves (and their descendants). When suspended a widget will be like a zombi. All methods will return false. Additionally, suspend() allow you to determine some persistants methods.

[iDo]

Usage :

//suspend a widget
myWidget.suspend(true);
//resume a widget
myWidget.suspend(false);


//suspend a widget and its decendants
myWidget.suspendRecursive(true);
//resume a widget and its decendants
myWidget.suspendRecursive(false);

And you can use the property "preserveFromSuspend" (array) to preserve some methods

[bill]

What's the reason for such functionality? I'm not sure how many people want to "suspend" a widget. It sounds like the same thing as disabling a widget, which is supported for form widgets (with a visual change), although not other widgets.

[iDo]

Replying to bill:

What's the reason for such functionality? I'm not sure how many people want to "suspend" a widget. It sounds like the same thing as disabling a widget, which is supported for form widgets (with a visual change), although not other widgets.

Sometime we have to hide a widget. And when we show it again, a dojo.publish, a resize, a dojo.connect could have modified its state. The goal is to ensure the widget will be the same as it was before hiding. Indeed, it's like "disabled" but it's disable for code action not for user action.

[bill]

Thanks. I'll keep this mind but I'm not going to check it in at the current time, because I haven't heard others asking for this functionality, and we need to keep dijit lean. I suspect also that the code could be simplified by using the dojox AOP code (which will hopefully be moved into dojo core soon).