silverstripe-framework/javascript/TreeDropdownField.js
Ingo Schommer 3b40711b98 BUG Resize infinite loops in IE8 (fixes #575)
IE8 gets a bit confused and fires resize events
when element dimensions in the DOM are changed
as a result of a resize event, causing an infinite loop.
Apart from artificially throttling the event, the only solution
I've found is to check for actual window dimension changes.
http://stackoverflow.com/questions/12366315/window-resize-event-continually-fires-in-ie7?lq=1

This implicitly fixes an issue where TreeDropdownField panel isn't
accessible in the "Insert Media" popup, because the resize event happes
to be triggered by the popup overlay, and in effect closes the drop down
panel right after opening it.

Relating to the jQuery UI component, there's a host of issues and discussions around this, but no solution…
http://bugs.jquery.com/ticket/4097
http://bugs.jqueryui.com/ticket/4758
http://bugs.jqueryui.com/ticket/4065
http://bugs.jqueryui.com/ticket/7514
http://bugs.jqueryui.com/ticket/8881
https://groups.google.com/forum/?fromgroups#!topic/jquery-ui/fDSvwAKL6Go
http://www.mail-archive.com/jquery-ui@googlegroups.com/msg04839.html
2013-06-13 17:37:25 +02:00

387 lines
12 KiB
JavaScript

(function($) {
$.entwine('ss', function($){
/**
* On resize of any close the open treedropdownfields
* as we'll need to redo with widths
*/
var windowWidth, windowHeight;
$(window).bind('resize.treedropdownfield', function() {
// Entwine's 'fromWindow::onresize' does not trigger on IE8. Use synthetic event.
var cb = function() {$('.TreeDropdownField').closePanel();};
// Workaround to avoid IE8 infinite loops when elements are resized as a result of this event
if($.browser.msie && parseInt($.browser.version, 10) < 9) {
var newWindowWidth = $(window).width(), newWindowHeight = $(window).height();
if(newWindowWidth != windowWidth || newWindowHeight != windowHeight) {
windowWidth = newWindowWidth;
windowHeight = newWindowHeight;
cb();
}
} else {
cb();
}
});
var strings = {
'openlink': 'Open',
'fieldTitle': '(choose)',
'searchFieldTitle': '(choose or search)'
};
var _clickTestFn = function(e) {
// If the click target is not a child of the current field, close the panel automatically.
if(!$(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({
onadd: 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();
},
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');
var top = this.position().top + this.height();
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();
this.trigger('panelshow');
},
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();
this.trigger('panelhide');
},
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.data('metadata', $.extend(this.data('metadata'), {id: 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': function(node) {
var url = $.path.parseUrl(self.data('urlTree')).hrefNoSearch;
return url + '/' + ($(node).data("id") ? $(node).data("id") : 0);
},
'data': function(node) {
var query = $.query.load(self.data('urlTree')).keys;
var params = self.getRequestParams();
params = $.extend({}, query, params, {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({
onadd: function() {
this._super();
var title = decodeURIComponent(this.data('title'));
this.find('.treedropdownfield-title').replaceWith(
$('<input type="text" class="treedropdownfield-title search" />')
);
this.setTitle(title ? title : strings.searchFieldTitle);
},
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({
onadd: function() {
this.bind('change.TreeDropdownField', function() {
$(this).getField().updateTitle();
});
},
onremove: function() {
this.unbind('.TreeDropdownField');
}
});
});
}(jQuery));