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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");
var assert = require("../shared/_assert.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() {
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();
assertEventPrevented("selectstart", htmlElement.triggerSelectStart); // required for IE 8 text dragging
assertEventPrevented("mousedown", htmlElement.triggerMouseDown);
if (browser.supportsTouchEvents()) {
assertEventPrevented("touchstart", htmlElement.triggerSingleTouchStart);
assertEventPrevented("touchstart", htmlElement.triggerMultiTouchStart);
}
function assertEventPrevented(event, eventTriggerFn) {
var monitor = monitorEvent(event);
htmlElement._element.trigger(event);
assert.equal(monitor.defaultPrevented, true);
}
});
it("reports whether drag-related defaults have been prevented", function() {
assert.equal(htmlElement.isBrowserDragDefaultsPrevented(), false);
htmlElement.preventBrowserDragDefaults();
assert.equal(htmlElement.isBrowserDragDefaultsPrevented(), 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 });
assert.deepEqual(monitor.pageCoordinates, [ 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);
assert.deepEqual(monitor.pageCoordinates, [ 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 });
assert.deepEqual(monitor.eventTriggeredAt, expectedPageCoordinates);
}
});
});
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);
assert.deepEqual(monitor.touches, []);
}
});
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 });
assert.deepEqual(monitor.touches, [[ 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);
assert.deepEqual(monitor.touches, [[ 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 });
assert.deepEqual(monitor.touches, [
[ 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);
assert.equal(monitor.eventTriggered, true);
assert.equal(monitor.eventTriggeredAt, 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 });
assert.deepEqual(monitor.eventTriggeredAt, 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);
assert.equal(monitor.eventTriggered, true);
assert.equal(monitor.eventTriggeredAt, undefined);
}
});
});
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("sizing", function() {
it("provides its dimensions", function() {
var element = HtmlElement.fromHtml("<div style='width: 120px; height: 80px;'></div>");
assert.deepEqual(element.getDimensions(), {
width: 120,
height: 80
});
});
it("dimensions are not affected by padding, border, or margin", function() {
var element = HtmlElement.fromHtml("<div style='" +
"width: 120px; " +
"height: 80px; " +
"padding: 13px; " +
"border: 7px; " +
"margin: 19px; " +
"'></div>");
assert.deepEqual(element.getDimensions(), {
width: 120,
height: 80
});
});
});
describe("coordinate conversion", function() {
var COLLAPSING_BODY_MARGIN = 8;
beforeEach(function() {
htmlElement.appendSelfToBody();
});
afterEach(function() {
htmlElement.remove();
});
it("converts page coordinates into relative element coordinates", function() {
var offset = htmlElement.relativeOffset({x: 100, y: 150});
assertRelativeOffsetEquals(offset, 92, 142);
});
it("converts relative coordinates into page coordinates", function() {
var offset = htmlElement.relativeOffset({x: 100, y: 150});
assertPageOffsetEquals(offset, 92, 142);
});
it("page coordinate conversion accounts for margin", function() {
checkRelativeStyle("margin-top: 13px;", 0, 13 - COLLAPSING_BODY_MARGIN);
checkRelativeStyle("margin-left: 13px;", 13, 0);
checkRelativeStyle("margin: 13px;", 13, 13 - COLLAPSING_BODY_MARGIN);
checkRelativeStyle("margin: 1em; font-size: 16px", 16, 16 - COLLAPSING_BODY_MARGIN);
});
it("relative coordinate conversion accounts for margin", function() {
checkPageStyle("margin-top: 13px;", 0, 13 - COLLAPSING_BODY_MARGIN);
checkPageStyle("margin-left: 13px;", 13, 0);
checkPageStyle("margin: 13px;", 13, 13 - COLLAPSING_BODY_MARGIN);
checkPageStyle("margin: 1em; font-size: 16px", 16, 16 - COLLAPSING_BODY_MARGIN);
});
it("page coordinate conversion fails fast if there is any padding", function() {
expectFailFast("padding-top: 13px;");
expectFailFast("padding-left: 13px;");
expectFailFast("padding: 13px;");
expectFailFast("padding: 1em; font-size: 16px");
// IE 8 weirdness
expectFailFast("padding-top: 20%");
expectFailFast("padding-left: 20%");
});
it("page coordinate conversion fails fast if there is any border", function() {
expectFailFast("border-top: 13px solid;");
expectFailFast("border-left: 13px solid;");
expectFailFast("border: 13px solid;");
expectFailFast("border: 1em solid; font-size: 16px");
// IE 8 weirdness
expectFailFast("border: thin solid");
expectFailFast("border: medium solid");
expectFailFast("border: thick solid");
checkRelativeStyle("border: 13px none", 0, 0);
checkPageStyle("border: 13px none", 0, 0);
});
function expectFailFast(elementStyle) {
var styledElement = HtmlElement.fromHtml("<div style='" + elementStyle + "'></div>");
try {
styledElement.appendSelfToBody();
assert.throws(function() {
styledElement.relativeOffset({ x: 100, y: 150 });
});
assert.throws(function() {
styledElement.pageOffset({ x: 100, y: 150 });
});
}
finally {
styledElement.remove();
}
}
function checkRelativeStyle(elementStyle, additionalXOffset, additionalYOffset) {
var BASE_STYLE = "width: 120px; height: 80px; border: 0px none;";
var unstyledElement = HtmlElement.fromHtml("<div style='" + BASE_STYLE + "'></div>");
unstyledElement.appendSelfToBody();
var unstyledOffset = unstyledElement.relativeOffset({x: 100, y: 150});
unstyledElement.remove();
var styledElement = HtmlElement.fromHtml("<div style='" + BASE_STYLE + elementStyle + "'></div>");
try {
styledElement.appendSelfToBody();
var styledOffset = styledElement.relativeOffset({x: 100, y: 150});
assertRelativeOffsetEquals(
styledOffset,
unstyledOffset.x - additionalXOffset,
unstyledOffset.y - additionalYOffset
);
}
finally {
styledElement.remove();
}
}
function checkPageStyle(elementStyle, additionalXOffset, additionalYOffset) {
var BASE_STYLE = "width: 120px; height: 80px; border: 0px none;";
var unstyledElement = HtmlElement.fromHtml("<div style='" + BASE_STYLE + "'></div>");
unstyledElement.appendSelfToBody();
var unstyledOffset = unstyledElement.pageOffset({x: 100, y: 150});
unstyledElement.remove();
var styledElement = HtmlElement.fromHtml("<div style='" + BASE_STYLE + elementStyle + "'></div>");
try {
styledElement.appendSelfToBody();
var styledOffset = styledElement.pageOffset({x: 100, y: 150});
assertRelativeOffsetEquals(
styledOffset,
unstyledOffset.x + additionalXOffset,
unstyledOffset.y + additionalYOffset
);
}
finally {
styledElement.remove();
}
}
function assertRelativeOffsetEquals(actualOffset, expectedX, expectedY) {
assert.deepEqual(actualOffset, {x: expectedX, y: expectedY});
}
});
function assertPageOffsetEquals(actualOffset, expectedX, expectedY) {
assert.deepEqual(actualOffset, {x: expectedX, y: expectedY});
}
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();
assert.equal(domElement.outerHTML.toLowerCase(), "<code>foo</code>");
// Ensure that fromHtml converts HTML to DOM element, not jQuery element
assert.equal(element._domElement, domElement);
});
it("finds element by ID", function() {
var expectedElement = HtmlElement.fromHtml("<div id='anElement'></div>");
expectedElement.appendSelfToBody();
var actualElement = HtmlElement.fromId("anElement");
assert.equal(actualElement._domElement, expectedElement._domElement);
});
it("finding element by ID fails fast if ID not present", function() {
assert.throws(function() {
var element = HtmlElement.fromId("noSuchId");
});
});
it("appends elements", function() {
htmlElement.append(HtmlElement.fromHtml("<div></div>"));
assert.equal(htmlElement._element.children().length, 1);
});
it("appends to body", function() {
try {
var childrenBeforeAppend = bodyElement._element.children().length;
htmlElement.appendSelfToBody();
var childrenAfterAppend = bodyElement._element.children().length;
assert.equal(childrenBeforeAppend + 1, childrenAfterAppend);
} finally {
htmlElement.remove();
}
});
it("removes elements", function() {
var elementToAppend = HtmlElement.fromHtml("<div></div>");
htmlElement.append(elementToAppend);
elementToAppend.remove();
assert.equal(htmlElement._element.children().length, 0);
});
});
});
}());