silverstripe-framework/javascript/TreeDropdownField.js

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JavaScript
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(function($) {
$.entwine('ss', function($){
/**
* On resize of any close the open treedropdownfields
* as we'll need to redo with widths
*/
$(window).resize(function() {
$('.TreeDropdownField').closePanel();
});
var strings = {
'openlink': 'Open',
'fieldTitle': '(choose)',
'searchFieldTitle': '(choose or search)'
};
var _clickTestFn = function(e) {
// If the click target is not a child of the current field, close the panel automatically.
if(!$(e.target).parents('.TreeDropdownField').length) $('.TreeDropdownField').closePanel();
};
/**
* @todo Error display
* @todo No results display for search
* @todo Automatic expansion of ajax children when multiselect is triggered
* @todo Automatic panel positioning based on available space (top/bottom)
* @todo forceValue
* @todo Automatic width
* @todo Expand title height to fit all elements
*/
$('.TreeDropdownField').entwine({
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onmatch: function() {
this.append(
'<span class="treedropdownfield-title"></span>' +
'<div class="treedropdownfield-toggle-panel-link"><a href="#" class="ui-icon ui-icon-triangle-1-s"></a></div>' +
'<div class="treedropdownfield-panel"><div class="tree-holder"></div></div>'
);
var linkTitle = strings.openLink;
if(linkTitle) this.find("treedropdownfield-toggle-panel-link a").attr('title', linkTitle);
if(this.data('title')) this.setTitle(decodeURIComponent(this.data('title')));
this.getPanel().hide();
this._super();
},
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onunmatch: function() {
this._super();
},
getPanel: function() {
return this.find('.treedropdownfield-panel');
},
openPanel: function() {
// close all other panels
$('.TreeDropdownField').closePanel();
// Listen for clicks outside of the field to auto-close it
$('body').bind('click', _clickTestFn);
var panel = this.getPanel(), tree = this.find('.tree-holder');
// set the panel to the bottom of the field. Takes into account the
// mouse scroll position.
// @todo - support for opening above content
var scrollTop = 0;
this.parents().each(function(i, e) {
if($(e).scrollTop() > 0) {
scrollTop = $(e).scrollTop();
return;
}
});
var top = this.position().top + this.height() + scrollTop;
panel.css('top', top);
panel.css('width', this.width());
panel.show();
// swap the down arrow with an up arrow
var toggle = this.find(".treedropdownfield-toggle-panel-link");
toggle.addClass('treedropdownfield-open-tree');
this.addClass("treedropdownfield-open-tree");
toggle.find("a")
.removeClass('ui-icon-triangle-1-s')
.addClass('ui-icon-triangle-1-n');
if(tree.is(':empty')) this.loadTree();
},
closePanel: function() {
jQuery('body').unbind('click', _clickTestFn);
// swap the up arrow with a down arrow
var toggle = this.find(".treedropdownfield-toggle-panel-link");
toggle.removeClass('treedropdownfield-open-tree');
this.removeClass('treedropdownfield-open-tree');
toggle.find("a")
.removeClass('ui-icon-triangle-1-n')
.addClass('ui-icon-triangle-1-s');
this.getPanel().hide();
},
togglePanel: function() {
this[this.getPanel().is(':visible') ? 'closePanel' : 'openPanel']();
},
setTitle: function(title) {
if(!title) title = strings.fieldTitle;
this.find('.treedropdownfield-title').html(title);
this.data('title', encodeURIComponent(title)); // separate view from storage (important for search cancellation)
},
getTitle: function() {
return this.find('.treedropdownfield-title').text();
},
/**
* Update title from tree node value
*/
updateTitle: function() {
var self = this, tree = self.find('.tree-holder'), val = this.getValue();
var updateFn = function() {
var val = self.getValue();
if(val) {
var node = tree.find('*[data-id="' + val + '"]'),
title = node.children('a').find("span.jstree_pageicon")?node.children('a').find("span.item").html():null;
if(!title) title=(node) ? tree.jstree('get_text', node[0]) : null;
if(title) self.setTitle(title);
if(node) tree.jstree('select_node', node);
}
};
// Load the tree if its not already present
if(jQuery.jstree._reference(tree) || !val) updateFn();
else this.loadTree(null, updateFn);
},
setValue: function(val) {
this.find(':input:hidden').val(val).trigger('change');
},
getValue: function() {
return this.find(':input:hidden').val();
},
loadTree: function(params, callback) {
var self = this, panel = this.getPanel(), treeHolder = $(panel).find('.tree-holder');
var params = (params) ? $.extend({}, this.getRequestParams(), params) : this.getRequestParams();
panel.addClass('loading');
treeHolder.load(this.data('urlTree'), params, function(html, status, xhr) {
var firstLoad = true;
if(status == 'success') {
$(this)
.jstree('destroy')
.bind('loaded.jstree', function(e, data) {
var val = self.getValue(), selectNode = treeHolder.find('*[data-id="' + val + '"]'),
currentNode = data.inst.get_selected();
if(val && selectNode != currentNode) data.inst.select_node(selectNode);
firstLoad = false;
if(callback) callback.apply(self);
})
.jstree(self.getTreeConfig())
.bind('select_node.jstree', function(e, data) {
var node = data.rslt.obj, id = $(node).data('id');
if(!firstLoad && !self.getValue() == id) {
// Value is already selected, unselect it (for lack of a better UI to do this)
self.data('metadata', null);
self.setTitle(null);
self.setValue(null);
data.inst.deselect_node(node);
} else {
self.data('metadata', $.extend({id: id}, $(node).getMetaData()));
self.setTitle(data.inst.get_text(node));
self.setValue(id);
}
// Avoid auto-closing panel on first load
if(!firstLoad) self.closePanel();
firstLoad=false
});
}
panel.removeClass('loading');
});
},
getTreeConfig: function() {
var self = this;
return {
'core': {
// 'initially_open': ['record-0'],
'animation': 0
},
'html_data': {
// TODO Hack to avoid ajax load on init, see http://code.google.com/p/jstree/issues/detail?id=911
'data': this.getPanel().find('.tree-holder').html(),
'ajax': {
'url': this.data('urlTree'),
'data': function(node) {
var id = $(node).data("id") ? $(node).data("id") : 0, params = self.getRequestParams();
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params = $.extend({}, params, {ID: id, ajax: 1});
return params;
}
}
},
'ui': {
"select_limit" : 1,
'initially_select': [this.getPanel().find('.current').attr('id')]
},
'themes': {
'theme': 'apple'
},
'plugins': ['html_data', 'ui', 'themes']
};
},
/**
* If the field is contained in a form, submit all form parameters by default.
* This is useful to keep state like locale values which are typically
* encoded in hidden fields through the form.
*
* @return {object}
*/
getRequestParams: function() {
return {};
}
});
$('.TreeDropdownField .tree-holder li').entwine({
/**
* Overload to return more data. The same data should be set on initial
* value through PHP as well (see TreeDropdownField->Field()).
*
* @return {object}
*/
getMetaData: function() {
var matches = this.attr('class').match(/class-([^\s]*)/i);
var klass = matches ? matches[1] : '';
return {ClassName: klass};
}
});
$('.TreeDropdownField *').entwine({
getField: function() {
return this.parents('.TreeDropdownField:first');
}
});
$('.TreeDropdownField').entwine({
onclick: function(e) {
this.togglePanel();
return false;
}
});
$('.TreeDropdownField .treedropdownfield-panel').entwine({
onclick: function(e) {
return false;
}
});
$('.TreeDropdownField.searchable').entwine({
onmatch: function() {
this._super();
var title = this.data('title');
this.find('.treedropdownfield-title').replaceWith(
$('<input type="text" class="treedropdownfield-title search" />')
);
this.setTitle(title ? title : strings.searchFieldTitle);
},
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onunmatch: function() {
this._super();
},
setTitle: function(title) {
if(!title && title !== '') title = strings.fieldTitle;
this.find('.treedropdownfield-title').val(title);
},
getTitle: function() {
return this.find('.treedropdownfield-title').val();
},
search: function(str, callback) {
this.openPanel();
this.loadTree({search: str}, callback);
},
cancelSearch: function() {
this.closePanel();
this.loadTree();
this.setTitle(this.data('title'));
}
});
$('.TreeDropdownField.searchable input.search').entwine({
onfocusin: function(e) {
var field = this.getField();
field.setTitle('');
},
onfocusout: function(e) {
var field = this.getField();
if(!field.getTitle()) field.setTitle(false);
},
onkeydown: function(e) {
var field = this.getField();
if(e.keyCode == 13) {
// trigger search on ENTER key
field.search(this.val());
return false;
} else if(e.keyCode == 27) {
// cancel search on ESC key
field.cancelSearch();
}
}
});
$('.TreeDropdownField.multiple').entwine({
getTreeConfig: function() {
var cfg = this._super();
cfg.checkbox = {override_ui: true, two_state: true};
cfg.plugins.push('checkbox');
cfg.ui.select_limit = -1;
return cfg;
},
loadTree: function(params, callback) {
var self = this, panel = this.getPanel(), treeHolder = $(panel).find('.tree-holder');
var params = (params) ? $.extend({}, this.getRequestParams(), params) : this.getRequestParams();
panel.addClass('loading');
treeHolder.load(this.data('urlTree'), params, function(html, status, xhr) {
var firstLoad = true;
if(status == 'success') {
$(this)
.jstree('destroy')
.bind('loaded.jstree', function(e, data) {
$.each(self.getValue(), function(i, val) {
data.inst.check_node(treeHolder.find('*[data-id=' + val + ']'));
});
firstLoad = false;
if(callback) callback.apply(self);
})
.jstree(self.getTreeConfig())
.bind('uncheck_node.jstree check_node.jstree', function(e, data) {
var nodes = data.inst.get_checked(null, true);
self.setValue($.map(nodes, function(el, i) {
return $(el).data('id');
}));
self.setTitle($.map(nodes, function(el, i) {
return data.inst.get_text(el);
}));
self.data('metadata', $.map(nodes, function(el, i) {
return {id: $(el).data('id'), metadata: $(el).getMetaData()};
}));
});
}
panel.removeClass('loading');
});
},
getValue: function() {
var val = this._super();
return val.split(/ *, */);
},
setValue: function(val) {
this._super($.isArray(val) ? val.join(',') : val);
},
setTitle: function(title) {
this._super($.isArray(title) ? title.join(', ') : title);
},
updateTitle: function() {
// TODO Not supported due to multiple values/titles yet
}
});
$('.TreeDropdownField input[type=hidden]').entwine({
onchange: function() {
this.getField().updateTitle();
}
});
});
}(jQuery));