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Commit 233db94c authored by Pascal Hartig's avatar Pascal Hartig
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Knockout.js: cancel on Escape

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architecture-examples/knockoutjs/bower_components/knockout.js/knockout.debug.js 0 → 100644
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// Knockout JavaScript library v3.0.0
// (c) Steven Sanderson - http://knockoutjs.com/
// License: MIT (http://www.opensource.org/licenses/mit-license.php)
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architecture-examples/knockoutjs/index.html
View file @ 233db94c
......@@ -22,7 +22,7 @@
<label data-bind="text: title, event: { dblclick: $root.editItem }"></label>
<button class="destroy" data-bind="click: $root.remove"></button>
</div>
<input class="edit" data-bind="value: title, valueUpdate: 'afterkeydown', enterKey: $root.stopEditing, selectAndFocus: editing, event: { blur: $root.stopEditing }">
<input class="edit" data-bind="value: title, valueUpdate: 'afterkeydown', enterKey: $root.saveEditing, escapeKey: $root.cancelEditing, selectAndFocus: editing, event: { blur: $root.stopEditing }">
</li>
</ul>
</section>
......
architecture-examples/knockoutjs/js/app.js
View file @ 233db94c
......@@ -3,30 +3,40 @@
'use strict';
var ENTER_KEY = 13;
var ESCAPE_KEY = 27;
// A factory function we can use to create binding handlers for specific
// keycodes.
function keyhandlerBindingFactory(keyCode) {
return {
init: function (element, valueAccessor, allBindingsAccessor, data, bindingContext) {
var wrappedHandler, newValueAccessor;
// wrap the handler with a check for the enter key
wrappedHandler = function (data, event) {
if (event.keyCode === keyCode) {
valueAccessor().call(this, data, event);
}
};
// a custom binding to handle the enter key (could go in a separate library)
ko.bindingHandlers.enterKey = {
init: function (element, valueAccessor, allBindingsAccessor, data, bindingContext) {
var wrappedHandler, newValueAccessor;
// wrap the handler with a check for the enter key
wrappedHandler = function (data, event) {
if (event.keyCode === ENTER_KEY) {
valueAccessor().call(this, data, event);
}
};
// create a valueAccessor with the options that we would want to pass to the event binding
newValueAccessor = function () {
return {
keyup: wrappedHandler
// create a valueAccessor with the options that we would want to pass to the event binding
newValueAccessor = function () {
return {
keyup: wrappedHandler
};
};
};
// call the real event binding's init function
ko.bindingHandlers.event.init(element, newValueAccessor, allBindingsAccessor, data, bindingContext);
}
};
// call the real event binding's init function
ko.bindingHandlers.event.init(element, newValueAccessor, allBindingsAccessor, data, bindingContext);
}
};
}
// a custom binding to handle the enter key
ko.bindingHandlers.enterKey = keyhandlerBindingFactory(ENTER_KEY);
// another custom binding, this time to handle the escape key
ko.bindingHandlers.escapeKey = keyhandlerBindingFactory(ESCAPE_KEY);
// wrapper to hasFocus that also selects text and applies focus async
ko.bindingHandlers.selectAndFocus = {
......@@ -103,10 +113,11 @@
// edit an item
this.editItem = function (item) {
item.editing(true);
item.previousTitle = item.title();
}.bind(this);
// stop editing an item. Remove the item, if it is now empty
this.stopEditing = function (item) {
this.saveEditing = function (item) {
item.editing(false);
var title = item.title();
......@@ -124,6 +135,12 @@
}
}.bind(this);
// cancel editing an item and revert to the previous content
this.cancelEditing = function (item) {
item.editing(false);
item.title(item.previousTitle);
}.bind(this);
// count of all completed todos
this.completedCount = ko.computed(function () {
return this.todos().filter(function (todo) {
......
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