Files
edx-platform/cms/static/js/views/course_info_edit.js
Don Mitchell 19927a83a5 Ensure settings and course info CRUD operations tell the user if there's
a server error and pull the server error handler into a common function.
2013-01-30 11:24:55 -05:00

287 lines
9.7 KiB
JavaScript

/* this view should own everything on the page which has controls effecting its operation
generate other views for the individual editors.
The render here adds views for each update/handout by delegating to their collections but does not
generate any html for the surrounding page.
*/
CMS.Views.CourseInfoEdit = Backbone.View.extend({
// takes CMS.Models.CourseInfo as model
tagName: 'div',
render: function() {
// instantiate the ClassInfoUpdateView and delegate the proper dom to it
new CMS.Views.ClassInfoUpdateView({
el: this.$('#course-update-view'),
collection: this.model.get('updates')
});
new CMS.Views.ClassInfoHandoutsView({
el: this.$('#course-handouts-view'),
model: this.model.get('handouts')
});
return this;
}
});
// ??? Programming style question: should each of these classes be in separate files?
CMS.Views.ClassInfoUpdateView = Backbone.View.extend({
// collection is CourseUpdateCollection
events: {
"click .new-update-button" : "onNew",
"click .save-button" : "onSave",
"click .cancel-button" : "onCancel",
"click .edit-button" : "onEdit",
"click .delete-button" : "onDelete"
},
initialize: function() {
var self = this;
// instantiates an editor template for each update in the collection
window.templateLoader.loadRemoteTemplate("course_info_update",
// TODO Where should the template reside? how to use the static.url to create the path?
"/static/client_templates/course_info_update.html",
function (raw_template) {
self.template = _.template(raw_template);
self.render();
}
);
},
render: function () {
// iterate over updates and create views for each using the template
var updateEle = this.$el.find("#course-update-list");
// remove and then add all children
$(updateEle).empty();
var self = this;
this.collection.each(function (update) {
var newEle = self.template({ updateModel : update });
$(updateEle).append(newEle);
});
this.$el.find(".new-update-form").hide();
this.$el.find('.date').datepicker({ 'dateFormat': 'MM d, yy' });
return this;
},
onNew: function(event) {
event.preventDefault();
var self = this;
// create new obj, insert into collection, and render this one ele overriding the hidden attr
var newModel = new CMS.Models.CourseUpdate();
this.collection.add(newModel, {at : 0});
var $newForm = $(this.template({ updateModel : newModel }));
var updateEle = this.$el.find("#course-update-list");
$(updateEle).prepend($newForm);
var $textArea = $newForm.find(".new-update-content").first();
if (this.$codeMirror == null ) {
this.$codeMirror = CodeMirror.fromTextArea($textArea.get(0), {
mode: "text/html",
lineNumbers: true,
lineWrapping: true,
});
}
$newForm.addClass('editing');
this.$currentPost = $newForm.closest('li');
window.$modalCover.show();
window.$modalCover.bind('click', function() {
self.closeEditor(self, true);
});
$('.date').datepicker('destroy');
$('.date').datepicker({ 'dateFormat': 'MM d, yy' });
},
onSave: function(event) {
event.preventDefault();
var targetModel = this.eventModel(event);
targetModel.set({ date : this.dateEntry(event).val(), content : this.$codeMirror.getValue() });
// push change to display, hide the editor, submit the change
targetModel.save({}, {error : CMS.ServerError});
this.closeEditor(this);
},
onCancel: function(event) {
event.preventDefault();
// change editor contents back to model values and hide the editor
$(this.editor(event)).hide();
var targetModel = this.eventModel(event);
this.closeEditor(this, !targetModel.id);
},
onEdit: function(event) {
event.preventDefault();
var self = this;
this.$currentPost = $(event.target).closest('li');
this.$currentPost.addClass('editing');
$(this.editor(event)).show();
var $textArea = this.$currentPost.find(".new-update-content").first();
if (this.$codeMirror == null ) {
this.$codeMirror = CodeMirror.fromTextArea($textArea.get(0), {
mode: "text/html",
lineNumbers: true,
lineWrapping: true,
});
}
window.$modalCover.show();
var targetModel = this.eventModel(event);
window.$modalCover.bind('click', function() {
self.closeEditor(self);
});
},
onDelete: function(event) {
event.preventDefault();
// TODO ask for confirmation
// remove the dom element and delete the model
var targetModel = this.eventModel(event);
this.modelDom(event).remove();
var cacheThis = this;
targetModel.destroy({success : function (model, response) {
cacheThis.collection.fetch({success : function() {cacheThis.render();},
error : CMS.ServerError});
},
error : CMS.ServerError
});
},
closeEditor: function(self, removePost) {
var targetModel = self.collection.getByCid(self.$currentPost.attr('name'));
if(removePost) {
self.$currentPost.remove();
}
// close the modal and insert the appropriate data
self.$currentPost.removeClass('editing');
self.$currentPost.find('.date-display').html(targetModel.get('date'));
self.$currentPost.find('.date').val(targetModel.get('date'));
self.$currentPost.find('.update-contents').html(targetModel.get('content'));
self.$currentPost.find('.new-update-content').val(targetModel.get('content'));
self.$currentPost.find('form').hide();
window.$modalCover.unbind('click');
window.$modalCover.hide();
this.$codeMirror = null;
self.$currentPost.find('.CodeMirror').remove();
},
// Dereferencing from events to screen elements
eventModel: function(event) {
// not sure if it should be currentTarget or delegateTarget
return this.collection.getByCid($(event.currentTarget).attr("name"));
},
modelDom: function(event) {
return $(event.currentTarget).closest("li");
},
editor: function(event) {
var li = $(event.currentTarget).closest("li");
if (li) return $(li).find("form").first();
},
dateEntry: function(event) {
var li = $(event.currentTarget).closest("li");
if (li) return $(li).find(".date").first();
},
contentEntry: function(event) {
return $(event.currentTarget).closest("li").find(".new-update-content").first();
},
dateDisplay: function(event) {
return $(event.currentTarget).closest("li").find("#date-display").first();
},
contentDisplay: function(event) {
return $(event.currentTarget).closest("li").find(".update-contents").first();
}
});
// the handouts view is dumb right now; it needs tied to a model and all that jazz
CMS.Views.ClassInfoHandoutsView = Backbone.View.extend({
// collection is CourseUpdateCollection
events: {
"click .save-button" : "onSave",
"click .cancel-button" : "onCancel",
"click .edit-button" : "onEdit"
},
initialize: function() {
var self = this;
this.model.fetch(
{
complete: function() {
window.templateLoader.loadRemoteTemplate("course_info_handouts",
"/static/client_templates/course_info_handouts.html",
function (raw_template) {
self.template = _.template(raw_template);
self.render();
}
);
},
error : CMS.ServerError
}
);
},
render: function () {
var updateEle = this.$el;
var self = this;
this.$el.html(
$(this.template( {
model: this.model
})
)
);
this.$preview = this.$el.find('.handouts-content');
this.$form = this.$el.find(".edit-handouts-form");
this.$editor = this.$form.find('.handouts-content-editor');
this.$form.hide();
return this;
},
onEdit: function(event) {
var self = this;
this.$editor.val(this.$preview.html());
this.$form.show();
if (this.$codeMirror == null) {
this.$codeMirror = CodeMirror.fromTextArea(this.$editor.get(0), {
mode: "text/html",
lineNumbers: true,
lineWrapping: true,
});
}
window.$modalCover.show();
window.$modalCover.bind('click', function() {
self.closeEditor(self);
});
},
onSave: function(event) {
this.model.set('data', this.$codeMirror.getValue());
this.render();
this.model.save({}, {error: CMS.ServerError});
this.$form.hide();
this.closeEditor(this);
},
onCancel: function(event) {
this.$form.hide();
this.closeEditor(this);
},
closeEditor: function(self) {
this.$form.hide();
window.$modalCover.unbind('click');
window.$modalCover.hide();
self.$form.find('.CodeMirror').remove();
this.$codeMirror = null;
}
});