File:  [LON-CAPA] / loncom / html / htmlarea / Attic / dialog.js
Revision 1.1: download - view: text, annotated - select for diffs
Wed Feb 18 08:07:15 2004 UTC (20 years, 4 months ago) by www
Branches: MAIN
CVS tags: HEAD
Install HTMLArea

    1: // Though "Dialog" looks like an object, it isn't really an object.  Instead
    2: // it's just namespace for protecting global symbols.
    3: 
    4: function Dialog(url, action, init) {
    5: 	if (typeof init == "undefined") {
    6: 		init = window;	// pass this window object by default
    7: 	}
    8: 	if (document.all) {	// here we hope that Mozilla will never support document.all
    9: 		var value =
   10: 			showModalDialog(url, init,
   11: //			window.open(url, '_blank',
   12: 					"resizable: no; help: no; status: no; scroll: no");
   13: 		if (action) {
   14: 			action(value);
   15: 		}
   16: 	} else {
   17: 		return Dialog._geckoOpenModal(url, action, init);
   18: 	}
   19: };
   20: 
   21: Dialog._parentEvent = function(ev) {
   22: 	if (Dialog._modal && !Dialog._modal.closed) {
   23: 		Dialog._modal.focus();
   24: 		// we get here in Mozilla only, anyway, so we can safely use
   25: 		// the DOM version.
   26: 		ev.preventDefault();
   27: 		ev.stopPropagation();
   28: 	}
   29: };
   30: 
   31: // should be a function, the return handler of the currently opened dialog.
   32: Dialog._return = null;
   33: 
   34: // constant, the currently opened dialog
   35: Dialog._modal = null;
   36: 
   37: // the dialog will read it's args from this variable
   38: Dialog._arguments = null;
   39: 
   40: Dialog._geckoOpenModal = function(url, action, init) {
   41: 	var dlg = window.open(url, "ha_dialog",
   42: 			      "toolbar=no,menubar=no,personalbar=no,width=10,height=10," +
   43: 			      "scrollbars=no,resizable=no");
   44: 	Dialog._modal = dlg;
   45: 	Dialog._arguments = init;
   46: 
   47: 	// capture some window's events
   48: 	function capwin(w) {
   49: 		w.addEventListener("click", Dialog._parentEvent, true);
   50: 		w.addEventListener("mousedown", Dialog._parentEvent, true);
   51: 		w.addEventListener("focus", Dialog._parentEvent, true);
   52: 	};
   53: 	// release the captured events
   54: 	function relwin(w) {
   55: 		w.removeEventListener("focus", Dialog._parentEvent, true);
   56: 		w.removeEventListener("mousedown", Dialog._parentEvent, true);
   57: 		w.removeEventListener("click", Dialog._parentEvent, true);
   58: 	};
   59: 	capwin(window);
   60: 	// capture other frames
   61: 	for (var i = 0; i < window.frames.length; capwin(window.frames[i++]));
   62: 	// make up a function to be called when the Dialog ends.
   63: 	Dialog._return = function (val) {
   64: 		if (val && action) {
   65: 			action(val);
   66: 		}
   67: 		relwin(window);
   68: 		// capture other frames
   69: 		for (var i = 0; i < window.frames.length; relwin(window.frames[i++]));
   70: 		Dialog._modal = null;
   71: 	};
   72: };

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