silverstripe-framework/admin/javascript/LeftAndMain.Panel.js

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JavaScript
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(function($) {
$.entwine('ss', function($){
// setup jquery.entwine
$.entwine.warningLevel = $.entwine.WARN_LEVEL_BESTPRACTISE;
/**
* Vertically collapsible panel. Generic enough to work with CMS menu as well as various "filter" panels.
*
* A panel consists of the following parts:
* - Container div: The outer element, with class ".cms-panel"
* - Header (optional)
* - Content
* - Expand and collapse toggle anchors (optional)
*
* Sample HTML:
* <div class="cms-panel">
* <div class="cms-panel-header">your header</div>
* <div class="cms-panel-content">your content here</div>
* <a href="#" class="toggle-expande">your toggle text</a>
* <a href="#" class="toggle-collapse">your toggle text</a>
* </div>
*/
$('.cms-panel').entwine({
WidthExpanded: null,
WidthCollapsed: null,
onmatch: function() {
if(!this.find('.cms-panel-content').length) throw new Exception('Content panel for ".cms-panel" not found');
// Create default controls unless they already exist
if(!this.find('.toggle-expand').length) this.append('<a class="toggle-expand" href="#"><span>&raquo;</span></a>');
if(!this.find('.toggle-collapse').length) this.append('<a class="toggle-collapse" href="#"><span>&laquo;</span></a>');
// Set panel width same as the content panel it contains. Assumes the panel has overflow: hidden.
this.setWidthExpanded(this.find('.cms-panel-content').innerWidth());
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// Assumes the collasped width is indicated by the toggle, or by an optional collapsed view
var collapsedContent = this.find('.cms-panel-content-collapsed');
this.setWidthCollapsed(collapsedContent.length ? collapsedContent.innerWidth() : this.find('.toggle-expand').innerWidth());
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this.togglePanel(!jQuery(this).hasClass('collapsed'));
this._super();
},
onclick: function(e) {
// By default, the whole collapsed area serves as a trigger
if(this.data('expandOnClick') && jQuery(this).hasClass('collapsed')) {
e.preventDefault();
this.expandPanel();
}
},
togglePanel: function(bool) {
// if((!bool && this.hasClass('collapsed')) || (bool && !this.hasClass('collapsed'))) return;
this.toggleClass('collapsed', !bool);
var newWidth = bool ? this.getWidthExpanded() : this.getWidthCollapsed();
this.trigger('beforetoggle');
this.width(newWidth); // the content panel width always stays in "expanded state" to avoid floating elements
this.find('.toggle-collapse')[bool ? 'show' : 'hide']();
this.find('.toggle-expand')[bool ? 'hide' : 'show']();
// If an alternative collapsed view exists, toggle it as well
var collapsedContent = this.find('.cms-panel-content-collapsed');
if(collapsedContent.length) {
this.find('.cms-panel-content')[bool ? 'show' : 'hide']();
this.find('.cms-panel-content-collapsed')[bool ? 'hide' : 'show']();
}
this.trigger('toggle');
},
expandPanel: function() {
this.togglePanel(true);
},
collapsePanel: function() {
this.togglePanel(false);
}
});
$('.cms-panel *').entwine({
getPanel: function() {
return this.parents('.cms-panel:first');
}
});
$('.cms-panel .toggle-expand').entwine({
onclick: function(e) {
e.preventDefault();
this.getPanel().expandPanel();
}
});
$('.cms-panel .toggle-collapse').entwine({
onclick: function(e) {
this.getPanel().collapsePanel();
return false;
}
});
});
}(jQuery));