97 lines
2.8 KiB
JavaScript
97 lines
2.8 KiB
JavaScript
/**
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This view handles rendering of a combobox
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@class ComboboxView
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@extends Discourse.View
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@namespace Discourse
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@module Discourse
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**/
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Discourse.ComboboxView = Discourse.View.extend({
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tagName: 'select',
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classNames: ['combobox'],
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valueAttribute: 'id',
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buildData: function(o) {
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var data = "";
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if (this.dataAttributes) {
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this.dataAttributes.forEach(function(a) {
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data += "data-" + a + "=\"" + o.get(a) + "\" ";
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});
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}
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return data;
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},
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render: function(buffer) {
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var nameProperty = this.get('nameProperty') || 'name',
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none = this.get('none');
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// Add none option if required
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if (typeof none === "string") {
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buffer.push('<option value="">' + I18n.t(none) + "</option>");
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} else if (typeof none === "object") {
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buffer.push("<option value=\"\" " + this.buildData(none) + ">" + Em.get(none, nameProperty) + "</option>");
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}
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var selected = this.get('value');
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if (selected) { selected = selected.toString(); }
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if (this.get('content')) {
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var self = this;
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this.get('content').forEach(function(o) {
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var val = o[self.get('valueAttribute')];
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if (val) { val = val.toString(); }
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var selectedText = (val === selected) ? "selected" : "";
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buffer.push("<option " + selectedText + " value=\"" + val + "\" " + self.buildData(o) + ">" + Handlebars.Utils.escapeExpression(Em.get(o, nameProperty)) + "</option>");
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});
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}
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},
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valueChanged: function() {
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var $combo = this.$(),
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val = this.get('value');
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if (val !== undefined && val !== null) {
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$combo.val(val.toString());
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} else {
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$combo.val(null);
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}
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$combo.trigger("liszt:updated");
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}.observes('value'),
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contentChanged: function() {
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this.rerender();
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}.observes('content.@each'),
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didInsertElement: function() {
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var $elem = this.$(),
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self = this;
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$elem.chosen({ template: this.template, disable_search_threshold: 5 });
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if (this.overrideWidths) {
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// The Chosen plugin hard-codes the widths in style attrs. :<
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var $chznContainer = $elem.chosen().next();
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$chznContainer.removeAttr("style");
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$chznContainer.find('.chzn-drop').removeAttr("style");
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$chznContainer.find('.chzn-search input').removeAttr("style");
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}
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if (this.classNames && this.classNames.length > 0) {
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// Apply the classes to Chosen's dropdown div too:
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_.each(this.classNames,function(c) {
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$elem.chosen().next().addClass(c);
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});
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}
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$elem.chosen().change(function(e) {
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self.set('value', $(e.target).val());
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});
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},
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willClearRender: function() {
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var chosenId = this.$().attr('id') + "_chzn";
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Ember.$("#" + chosenId).remove();
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}
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});
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Discourse.View.registerHelper('combobox', Discourse.ComboboxView);
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