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// Copyright (c) 2013 Titanium I.T. LLC. All rights reserved. See LICENSE.txt for details.
(function() {
"use strict";
var HtmlElement = require("./html_element.js");
var browser = require("./browser.js");
describe("HtmlElement", function() {
var windowElement;
var bodyElement;
var htmlElement;
beforeEach(function() {
windowElement = new HtmlElement(window);
bodyElement = new HtmlElement(document.body);
htmlElement = HtmlElement.fromHtml("<div></div>");
});
afterEach(function() {
if (browser.supportsCaptureApi()) htmlElement.releaseCapture();
windowElement.removeAllEventHandlers();
bodyElement.removeAllEventHandlers();
htmlElement.removeAllEventHandlers();
});
describe("event handling", function() {
beforeEach(function() {
htmlElement.appendSelfToBody();
});
afterEach(function() {
htmlElement.remove();
});
it("clears all event handlers (useful for testing)", function() {
htmlElement.onMouseDown(function() {
throw new Error("event handler should have been removed");
});
htmlElement.removeAllEventHandlers();
htmlElement.triggerMouseDown(0, 0);
});
describe("default prevention", function() {
it("allows drag-related browser defaults to be prevented", function() {
htmlElement.preventBrowserDragDefaults();
expectEventToBePrevented("selectstart", htmlElement.triggerSelectStart); // required for IE 8 text dragging
expectEventToBePrevented("mousedown", htmlElement.triggerMouseDown);
if (browser.supportsTouchEvents()) {
expectEventToBePrevented("touchstart", htmlElement.triggerSingleTouchStart);
expectEventToBePrevented("touchstart", htmlElement.triggerMultiTouchStart);
}
function expectEventToBePrevented(event, eventTriggerFn) {
var monitor = monitorEvent(event);
htmlElement._element.trigger(event);
expect(monitor.defaultPrevented).to.be(true);
}
});
it("reports whether drag-related defaults have been prevented", function() {
expect(htmlElement.isBrowserDragDefaultsPrevented()).to.be(false);
htmlElement.preventBrowserDragDefaults();
expect(htmlElement.isBrowserDragDefaultsPrevented()).to.be(true);
});
});
describe("mouse events", function() {
it("can be triggered with coordinates relative to the element", function() {
checkEventTrigger(htmlElement.triggerMouseClick, "click");
checkEventTrigger(htmlElement.triggerMouseDown, "mousedown");
checkEventTrigger(htmlElement.triggerMouseMove, "mousemove");
checkEventTrigger(htmlElement.triggerMouseLeave, "mouseleave");
checkEventTrigger(htmlElement.triggerMouseUp, "mouseup");
function checkEventTrigger(eventTriggerFn, event) {
var monitor = monitorEvent(event);
eventTriggerFn.call(htmlElement, 4, 7);
var expectedPageCoordinates = htmlElement.pageOffset({ x: 4, y: 7 });
expect(monitor.pageCoordinates).to.eql([ expectedPageCoordinates.x, expectedPageCoordinates.y ]);
}
});
it("can be triggered without coordinates", function() {
checkEventTrigger(htmlElement.triggerMouseClick, "click");
checkEventTrigger(htmlElement.triggerMouseDown, "mousedown");
checkEventTrigger(htmlElement.triggerMouseMove, "mousemove");
checkEventTrigger(htmlElement.triggerMouseLeave, "mouseleave");
checkEventTrigger(htmlElement.triggerMouseUp, "mouseup");
function checkEventTrigger(eventTriggerFn, event) {
var monitor = monitorEvent(event);
eventTriggerFn.call(htmlElement);
expect(monitor.pageCoordinates).to.eql([ 0, 0 ]);
}
});
it("handlers receive coordinates relative to the page", function() {
checkEventHandler(htmlElement.onMouseClick, htmlElement.triggerMouseClick);
checkEventHandler(htmlElement.onMouseDown, htmlElement.triggerMouseDown);
checkEventHandler(htmlElement.onMouseMove, htmlElement.triggerMouseMove);
checkEventHandler(htmlElement.onMouseLeave, htmlElement.triggerMouseLeave);
checkEventHandler(htmlElement.onMouseUp, htmlElement.triggerMouseUp);
function checkEventHandler(eventHandlerFn, eventTriggerFn) {
var monitor = monitorEventHandler(htmlElement, eventHandlerFn);
eventTriggerFn.call(htmlElement, 60, 40);
var expectedPageCoordinates = htmlElement.pageOffset({ x: 60, y: 40 });
expect(monitor.eventTriggeredAt).to.eql(expectedPageCoordinates);
}
});
it("simulates buggy IE 8 behavior (where mouse events on window aren't sent to window object)", function() {
if (!browser.doesNotHandlesUserEventsOnWindow()) return;
var monitor = monitorEventHandler(windowElement, windowElement.onMouseUp);
windowElement.triggerMouseUp();
expect(monitor.eventTriggered).to.be(false);
});
});
describe("touch events", function() {
if (!browser.supportsTouchEvents()) return;
it("sends zero touches when emulating the end of a touch", function() {
checkEventTrigger("touchend", htmlElement.triggerTouchEnd);
checkEventTrigger("touchcancel", htmlElement.triggerTouchCancel);
function checkEventTrigger(event, eventTriggerFn) {
var monitor = monitorEvent(event);
eventTriggerFn.call(htmlElement);
expect(monitor.touches).to.eql([]);
}
});
it("sends single-touch events relative to triggering element", function() {
checkEventTrigger(htmlElement.triggerSingleTouchStart, "touchstart");
checkEventTrigger(htmlElement.triggerSingleTouchMove, "touchmove");
function checkEventTrigger(eventTriggerFn, event) {
var monitor = monitorEvent(event);
eventTriggerFn.call(htmlElement, 4, 7);
var expectedPageCoordinates = htmlElement.pageOffset({ x: 4, y: 7 });
expect(monitor.touches).to.eql([[ expectedPageCoordinates.x, expectedPageCoordinates.y ]]);
}
});
it("can send single-touch events without coordinates", function() {
checkEventTrigger(htmlElement.triggerSingleTouchStart, "touchstart");
checkEventTrigger(htmlElement.triggerSingleTouchMove, "touchmove");
function checkEventTrigger(eventTriggerFn, event) {
var monitor = monitorEvent(event);
eventTriggerFn.call(htmlElement);
expect(monitor.touches).to.eql([[ 0, 0 ]]);
}
});
it("sends multi-touch events relative to triggering element", function() {
checkEventTrigger(htmlElement.triggerMultiTouchStart, "touchstart");
function checkEventTrigger(eventTriggerFn, event) {
var monitor = monitorEvent(event);
eventTriggerFn.call(htmlElement, 10, 20, 30, 40);
var expectedFirstTouch = htmlElement.pageOffset({ x: 10, y: 20 });
var expectedSecondTouch = htmlElement.pageOffset({ x: 30, y: 40 });
expect(monitor.touches).to.eql([
[ expectedFirstTouch.x, expectedFirstTouch.y ],
[ expectedSecondTouch.x, expectedSecondTouch.y ]
]);
}
});
it("handles zero-touch events", function() {
checkEventHandler(htmlElement.onTouchEnd, htmlElement.triggerTouchEnd);
checkEventHandler(htmlElement.onTouchCancel, htmlElement.triggerTouchCancel);
function checkEventHandler(eventHandlerFn, eventTriggerFn) {
var monitor = monitorEventHandler(htmlElement, eventHandlerFn);
eventTriggerFn.call(htmlElement);
expect(monitor.eventTriggered).to.be(true);
expect(monitor.eventTriggeredAt).to.be(undefined);
}
});
it("handles single-touch events", function() {
checkEventHandler(htmlElement.onSingleTouchStart, htmlElement.triggerSingleTouchStart);
checkEventHandler(htmlElement.onSingleTouchMove, htmlElement.triggerSingleTouchMove);
function checkEventHandler(eventHandlerFn, eventTriggerFn) {
var monitor = monitorEventHandler(htmlElement, eventHandlerFn);
eventTriggerFn.call(htmlElement, 60, 40);
var expectedPageCoordinates = htmlElement.pageOffset({ x: 60, y: 40 });
expect(monitor.eventTriggeredAt).to.eql(expectedPageCoordinates);
}
});
it("handles multi-touch events (but doesn't provide coordinates)", function() {
checkEventHandler(htmlElement.onMultiTouchStart, htmlElement.triggerMultiTouchStart);
function checkEventHandler(eventHandlerFn, eventTriggerFn) {
var monitor = monitorEventHandler(htmlElement, eventHandlerFn);
eventTriggerFn.call(htmlElement, 1, 2, 3, 4);
expect(monitor.eventTriggered).to.be(true);
expect(monitor.eventTriggeredAt).to.be(undefined);
}
});
});
describe("Capture API", function() {
if (!browser.supportsCaptureApi()) return;
afterEach(function() {
htmlElement.releaseCapture();
});
it("emulates behavior of setCapture() (on browsers that support it)", function() {
var monitor = monitorEventHandler(htmlElement, htmlElement.onMouseMove);
htmlElement.setCapture();
bodyElement.triggerMouseMove();
expect(monitor.eventTriggered).to.be(true);
});
it("emulates behavior of releaseCapture() (on browsers that support it)", function() {
var monitor = monitorEventHandler(htmlElement, htmlElement.onMouseMove);
htmlElement.setCapture();
htmlElement.releaseCapture();
bodyElement.triggerMouseMove();
expect(monitor.eventTriggered).to.be(false);
});
it("when event triggered, event coordinates are relative to triggering element, not capturing element", function() {
var expectedPageCoordinates = bodyElement.pageOffset({ x: 30, y: 20 });
var monitor = monitorEventHandler(htmlElement, htmlElement.onMouseMove);
htmlElement.setCapture();
bodyElement.triggerMouseMove(30, 20);
expect(monitor.eventTriggeredAt).to.eql(expectedPageCoordinates);
});
});
function monitorEvent(event) {
var monitor = {
eventTriggered: false,
touches: null,
pageCoordinates: null,
defaultPrevented: false
};
htmlElement._element.on(event, function(event) {
monitor.eventTriggered = true;
monitor.pageCoordinates = [ event.pageX, event.pageY ];
monitor.defaultPrevented = event.isDefaultPrevented();
if (event.originalEvent) {
var eventTouches = event.originalEvent.touches;
monitor.touches = [];
for (var i = 0; i < eventTouches.length; i++) {
monitor.touches.push([ eventTouches[i].pageX, eventTouches[i].pageY ]);
}
}
});
return monitor;
}
function monitorEventHandler(htmlElement, eventFunction) {
var monitor = {
eventTriggered: false
};
eventFunction.call(htmlElement, function(pageOffset) {
monitor.eventTriggered = true;
monitor.eventTriggeredAt = pageOffset;
});
return monitor;
}
});
describe("coordinate conversion", function() {
it("converts page coordinates into relative element coordinates", function() {
try {
htmlElement.appendSelfToBody();
var offset = htmlElement.relativeOffset({x: 100, y: 150});
if (browser.reportsElementPositionOffByOneSometimes()) {
// compensate for off-by-one error in IE 8
expect(offset.x).to.equal(92);
expect(offset.y === 141 || offset.y === 142).to.be(true);
}
else {
expect(offset).to.eql({x: 92, y: 142});
}
} finally {
htmlElement.remove();
}
});
it("converts relative coordinates into page coordinates", function() {
try {
htmlElement.appendSelfToBody();
var offset = htmlElement.pageOffset({x: 100, y: 150});
if (browser.reportsElementPositionOffByOneSometimes()) {
// compensate for off-by-one error in IE 8
expect(offset.x).to.equal(108);
expect(offset.y === 158 || offset.y === 159).to.be(true);
}
else {
expect(offset).to.eql({x: 108, y: 158});
}
} finally {
htmlElement.remove();
}
});
});
describe("DOM manipulation", function() {
it("creates element from raw HTML; also, converts to DOM element", function() {
var element = HtmlElement.fromHtml("<code>foo</code>");
var domElement = element.toDomElement();
expect(domElement.outerHTML.toLowerCase()).to.equal("<code>foo</code>");
// Ensure that fromHtml converts HTML to DOM element, not jQuery element
expect(element._domElement).to.equal(domElement);
});
it("appends elements", function() {
htmlElement.append(HtmlElement.fromHtml("<div></div>"));
expect(htmlElement._element.children().length).to.equal(1);
});
it("appends to body", function() {
try {
var childrenBeforeAppend = bodyElement._element.children().length;
htmlElement.appendSelfToBody();
var childrenAfterAppend = bodyElement._element.children().length;
expect(childrenBeforeAppend + 1).to.equal(childrenAfterAppend);
} finally {
htmlElement.remove();
}
});
it("removes elements", function() {
var elementToAppend = HtmlElement.fromHtml("<div></div>");
htmlElement.append(elementToAppend);
elementToAppend.remove();
expect(htmlElement._element.children().length).to.equal(0);
});
});
});
}());