mirror of
https://git.proxmox.com/git/pve-manager
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101 lines
2.4 KiB
JavaScript
101 lines
2.4 KiB
JavaScript
/*
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* The DiffStore is a in-memory store acting as proxy between a real store
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* instance and a component.
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* Its purpose is to redisplay the component *only* if the data has been changed
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* inside the real store, to avoid the annoying visual flickering of using
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* the real store directly.
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*
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* Implementation:
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* The DiffStore monitors via mon() the 'load' events sent by the real store.
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* On each 'load' event, the DiffStore compares its own content with the target
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* store (call to cond_add_item()) and then fires a 'refresh' event.
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* The 'refresh' event will automatically trigger a view refresh on the component
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* who binds to this store.
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*/
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/* Config properties:
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* rstore: the realstore which will autorefresh its content from the API
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* Only works if rstore has a model and use 'idProperty'
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* sortAfterUpdate: sort the diffstore before rendering the view
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*/
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Ext.define('PVE.data.DiffStore', {
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extend: 'Ext.data.Store',
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sortAfterUpdate: false,
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constructor: function(config) {
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var me = this;
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config = config || {};
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if (!config.rstore) {
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throw "no rstore specified";
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}
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if (!config.rstore.model) {
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throw "no rstore model specified";
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}
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var rstore = config.rstore;
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Ext.apply(config, {
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model: rstore.model,
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proxy: { type: 'memory' }
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});
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me.callParent([config]);
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var first_load = true;
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var cond_add_item = function(data, id) {
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var olditem = me.getById(id);
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if (olditem) {
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olditem.beginEdit();
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Ext.Array.each(me.model.prototype.fields, function(field) {
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if (olditem.data[field.name] !== data[field.name]) {
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olditem.set(field.name, data[field.name]);
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}
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});
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olditem.endEdit(true);
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olditem.commit();
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} else {
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var newrec = Ext.create(me.model, data);
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var pos = (me.appendAtStart && !first_load) ? 0 : me.data.length;
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me.insert(pos, newrec);
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}
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};
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me.mon(rstore, 'load', function(s, records, success) {
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if (!success) {
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return;
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}
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me.suspendEvents();
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// remove vanished items
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(me.snapshot || me.data).each(function(olditem) {
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var item = rstore.getById(olditem.getId());
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if (!item) {
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me.remove(olditem);
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}
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});
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rstore.each(function(item) {
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cond_add_item(item.data, item.getId());
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});
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me.filter();
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if (me.sortAfterUpdate) {
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me.sort();
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}
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first_load = false;
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me.resumeEvents();
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me.fireEvent('refresh', me);
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});
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}
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});
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