silverstripe-cms/javascript/CMSPageHistoryController.js

184 lines
4.8 KiB
JavaScript

(function($) {
/**
* File: CMSPageHistoryController.js
*
* Handles related interactions between the version selection form on the
* left hand side of the panel and the version displaying on the right
* hand side.
*/
$.entwine('ss', function($){
/**
* Class: #Form_VersionsForm
*
* The left hand side version selection form is the main interface for
* users to select a version to view, or to compare two versions
*/
$('#Form_VersionsForm').entwine({
/**
* Constructor
*/
onmatch: function() {
this._super();
},
onunmatch: function() {
this._super();
},
/**
* Function: submit.
*
* Submits either the compare versions form or the view single form
* display based on whether we have two or 1 option selected
*
* Todo:
* Handle coupling to admin url
*/
onsubmit: function(e, d) {
e.preventDefault();
var id, self = this;
id = this.find(':input[name=ID]').val();
if(!id) return false;
var button, url, selected, to, from, compare, data;
compare = (this.find(":input[name=CompareMode]").is(":checked"));
selected = this.find("table input[type=checkbox]").filter(":checked");
if(compare) {
if(selected.length != 2) return false;
to = selected.eq(0).val();
from = selected.eq(1).val();
button = this.find(':submit[name=action_doCompare]');
url = ss.i18n.sprintf(this.data('linkTmplCompare'), id,from,to);
}
else {
to = selected.eq(0).val();
button = this.find(':submit[name=action_doShowVersion]');
url = ss.i18n.sprintf(this.data('linkTmplShow'), id,to);
}
$('.cms-container').loadPanel(url, '', {pjax: 'CurrentForm'});
}
});
/**
* Class: :input[name=ShowUnpublished]
*
* Used for toggling whether to show or hide unpublished versions.
*/
$('#Form_VersionsForm input[name=ShowUnpublished]').entwine({
onmatch: function() {
this.toggle();
this._super();
},
onunmatch: function() {
this._super();
},
/**
* Event: :input[name=ShowUnpublished] change
*
* Changing the show unpublished checkbox toggles whether to show
* or hide the unpublished versions. Because those rows may be being
* compared this also ensures those rows are unselected.
*/
onchange: function() {
this.toggle();
},
toggle: function() {
var self = $(this);
var form = self.parents('form');
if(self.attr('checked')) {
form.find('tr[data-published=false]').show();
} else {
form.find("tr[data-published=false]").hide()._unselect();
}
}
});
/**
* Class: #Form_VersionsForm tr
*
* An individual row in the versions form. Selecting the row updates
* the edit form depending on whether we're showing individual version
* information or displaying comparsion.
*/
$("#Form_VersionsForm tbody tr").entwine({
/**
* Function: onclick
*
* Selects or deselects the row (if in compare mode). Will trigger
* an update of the edit form if either selected (in single mode)
* or if this is the second row selected (in compare mode)
*/
onclick: function(e) {
var compare, selected;
// compare mode
compare = this.parents("form").find(':input[name=CompareMode]').attr("checked");
selected = this.siblings(".active");
if(compare && this.hasClass('active')) {
this._unselect();
return;
}
else if(compare) {
// check if we have already selected more than two.
if(selected.length > 1) {
return alert(ss.i18n._t('ONLYSELECTTWO', 'You can only compare two versions at this time.'));
}
this._select();
// if this is the second selected then we can compare.
if(selected.length == 1) {
this.parents('form').submit();
}
return;
}
else {
this._select();
selected._unselect();
this.parents("form").submit();
}
},
/**
* Function: _unselect()
*
* Unselects the row from the form selection.
*
* Using regular js to update the class rather than this.removeClass('active')
* because the latter causes the browser to continuously call
* element.compareDocumentPosition, causing the browser to hang for long
* periods of time, especially on pages with lots of versions (e.g. 100+)
*/
_unselect: function() {
var tr = this.get(0);
tr.className = $.trim(tr.className.replace(/\bactive\b/, ''));
this.find(":input[type=checkbox][checked]").attr("checked", false);
},
/**
* Function: _select()
*
* Selects the currently matched row in the form selection
*/
_select: function() {
this.addClass('active');
this.find(":input[type=checkbox]").attr("checked", true);
}
});
});
})(jQuery);