silverstripe-cms/javascript/ModelAdmin.History.js

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JavaScript
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/**
* File: ModelAdmin.History.js
*/
(function($) {
$.entwine('ss', function($){
/**
* Class: .ModelAdmin
*
* A simple ajax browser history implementation tailored towards
* navigating through search results and different forms loaded into
* the ModelAdmin right panels. The logic listens to search and form loading
* events, keeps track of the loaded URLs, and will display graphical back/forward
* buttons where appropriate. A search action will cause the history to be reset.
*
* Note: The logic does not replay save operations or hook into any form actions.
*
* Available Events:
* - historyAdd
* - historyStart
* - historyGoFoward
* - historyGoBack
*
* Todo:
* Switch tab state when re-displaying search forms
* Reload search parameters into forms
*/
$('.ModelAdmin').entwine({
/**
* Variable: History
*/
History: [],
/**
* Variable: Future
*/
Future: [],
onmatch: function() {
var self = this;
this._super();
// generate markup
this.find('#right').prepend(
'<div class="historyNav">'
+ '<a href="#" class="back">&lt; ' + ss.i18n._t('ModelAdmin.HISTORYBACK', 'back') + '</a>'
+ '<a href="#" class="forward">' + ss.i18n._t('ModelAdmin.HISTORYFORWARD', 'forward') + ' &gt;</a>'
+ '</div>'
).find('.back,.forward').hide();
this.find('.historyNav .back').live('click', function() {
self.goBack();
return false;
});
this.find('.historyNav .forward').live('click', function() {
self.goForward();
return false;
});
},
/**
* Function: redraw
*/
redraw: function() {
this.find('.historyNav .forward').toggle(Boolean(this.getFuture().length > 0));
this.find('.historyNav .back').toggle(Boolean(this.getHistory().length > 1));
},
/**
* Function: startHistory
*
* Parameters:
* (String) url - ...
* (Object) data - ...
*/
startHistory: function(url, data) {
this.trigger('historyStart', {url: url, data: data});
this.setHistory([]);
this.addHistory(url, data);
},
/**
* Add an item to the history, to be accessed by goBack and goForward
*/
addHistory: function(url, data) {
this.trigger('historyAdd', {url: url, data: data});
// Combine data into URL
if(data) {
if(url.indexOf('?') == -1) url += '?' + $.param(data);
else url += '&' + $.param(data);
}
// Add to history
this.getHistory().push(url);
// Reset future
this.setFuture([]);
this.redraw();
},
/**
* Function: goBack
*/
goBack: function() {
if(this.getHistory() && this.getHistory().length) {
if(this.getFuture() == null) this.setFuture([]);
var currentPage = this.getHistory().pop();
var previousPage = this.getHistory()[this.getHistory().length-1];
this.getFuture().push(currentPage);
this.trigger('historyGoBack', {url:previousPage});
// load new location
$('#Form_EditForm').loadForm(previousPage);
this.redraw();
}
},
/**
* Function: goForward
*/
goForward: function() {
if(this.getFuture() && this.getFuture().length) {
if(this.getFuture() == null) this.setFuture([]);
var nextPage = this.getFuture().pop();
this.getHistory().push(nextPage);
this.trigger('historyGoForward', {url:nextPage});
// load new location
$('#Form_EditForm').loadForm(nextPage);
this.redraw();
}
}
});
/**
* Class: #SearchForm_holder form
*
* A search action will cause the history to be reset.
*/
$('#SearchForm_holder form').entwine({
onmatch: function() {
var self = this;
this.bind('beforeSubmit', function(e) {
$('.ModelAdmin').startHistory(
self.attr('action'),
self.serializeArray()
);
});
this._super();
}
});
/**
* Class: form[name=Form_ResultsForm] tbody td a
*
* We have to apply this to the result table buttons instead of the
* more generic form loading.
*/
$('form[name=Form_ResultsForm] tbody td a').entwine({
onclick: function(e) {
$('.ModelAdmin').addHistory(this.attr('href'));
}
});
});
})(jQuery);