fdd8245eec
Made some fixes on itemTreeView to allow for notify() on multiple deletes (shifts the row identifier up 1 for each previous delete, etc.) One more thing -- this might not happen because the tree calls each Item.erase() or Collection.removeItem() individually. Bug fix on notifier.js so that register*Tree() actually returns the hash. :-) Unfortunately, unregister*Tree() does not seem to actually work, there is still an object at _observers['itemTree'][hash] (temporary): When you select an item Scholar no longer loads a page into the browser. The javascript bugs on those HTML pages were frustrating the debugger.
79 lines
1.8 KiB
JavaScript
79 lines
1.8 KiB
JavaScript
Scholar.Notifier = new function(){
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var _observers = new Array();
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_observers['columnTree'] = new Array();
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_observers['itemTree'] = new Array();
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this.registerColumnTree = registerColumnTree;
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this.registerItemTree = registerItemTree;
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this.unregisterColumnTree = unregisterColumnTree;
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this.unregisterItemTree = unregisterItemTree;
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this.trigger = trigger;
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function registerColumnTree(ref){
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return _register('columnTree', ref);
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}
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function registerItemTree(ref){
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return _register('itemTree', ref);
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}
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function unregisterColumnTree(hash){
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_unregister('columnTree', hash);
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}
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function unregisterItemTree(hash){
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_unregister('columnTree', hash);
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}
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/**
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* event - 'add', 'remove', 'modify'
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* type - 'collection', 'smartcollection', 'item'
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* ids - single id or array of ids
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**/
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function trigger(event, type, ids){
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switch (type){
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case 'item':
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var treeType = 'itemTree';
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break;
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case 'collection':
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case 'smartcollection':
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var treeType = 'columnTree';
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break;
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default:
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throw('Invalid type in Notifier.trigger()');
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}
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for (i in _observers[treeType]){
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Scholar.debug("Calling _observers['" + treeType + "']"
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+ "['" + i + "'].notify('" + event + "', " + type + "', "
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+ (typeof ids=='Object' ? ids.join() : ids)
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+ ")", 4);
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_observers[treeType][i].notify(event, type, ids);
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}
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}
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function _register(type, ref){
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var len = 6;
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var tries = 10;
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do {
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// Increase the hash length if we can't find a unique key
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if (!tries){
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len++;
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tries = 10;
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}
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var hash = Scholar.randomString(len);
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tries--;
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}
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while (_observers[type][hash]);
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Scholar.debug('Registering ' + type + " in notifier with hash '" + hash + "'", 4);
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_observers[type][hash] = ref;
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return hash;
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}
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function _unregister(type, hash){
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delete _observers[type][hash];
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}
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}
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