• file
• revisions
• annotate
• diff
• comparison
• raw

layout/ipc/test-ipcbrowser-chrome.js@97036ab72558 (annotated)

layout/ipc/test-ipcbrowser-chrome.js

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	2	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	3	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	4
michael@0	5	function init() {
michael@0	6	enableAsyncScrolling();
michael@0	7	messageManager.loadFrameScript(
michael@0	8	"chrome://global/content/test-ipcbrowser-content.js", true
michael@0	9	);
michael@0	10	}
michael@0	11
michael@0	12	function browser() {
michael@0	13	return document.getElementById("content");
michael@0	14	}
michael@0	15
michael@0	16	function frameLoader() {
michael@0	17	return browser().QueryInterface(Components.interfaces.nsIFrameLoaderOwner).frameLoader;
michael@0	18	}
michael@0	19
michael@0	20	function viewManager() {
michael@0	21	return frameLoader().QueryInterface(Components.interfaces.nsIContentViewManager);
michael@0	22	}
michael@0	23
michael@0	24	function rootView() {
michael@0	25	return viewManager().rootContentView;
michael@0	26	}
michael@0	27
michael@0	28	function enableAsyncScrolling() {
michael@0	29	frameLoader().renderMode = Components.interfaces.nsIFrameLoader.RENDER_MODE_ASYNC_SCROLL;
michael@0	30	}
michael@0	31
michael@0	32	// Functions affecting the content window.
michael@0	33
michael@0	34	function loadURL(url) {
michael@0	35	browser().setAttribute('src', url);
michael@0	36	}
michael@0	37
michael@0	38	function scrollContentBy(dx, dy) {
michael@0	39	messageManager.broadcastAsyncMessage("scrollBy",
michael@0	40	{ dx: dx, dy: dy });
michael@0	41
michael@0	42	}
michael@0	43
michael@0	44	function scrollContentTo(x, y) {
michael@0	45	messageManager.broadcastAsyncMessage("scrollTo",
michael@0	46	{ x: x, y: y });
michael@0	47	}
michael@0	48
michael@0	49	function setContentViewport(w, h) {
michael@0	50	messageManager.broadcastAsyncMessage("setViewport",
michael@0	51	{ w: w, h: h });
michael@0	52	}
michael@0	53
michael@0	54	function setContentDisplayPort(x, y, w, h) {
michael@0	55	messageManager.broadcastAsyncMessage("setDisplayPort",
michael@0	56	{ x: x, y: y, w: w, h: h });
michael@0	57	}
michael@0	58
michael@0	59	function setContentResolution(xres, yres) {
michael@0	60	messageManager.broadcastAsyncMessage("setResolution",
michael@0	61	{ xres: xres, yres: yres });
michael@0	62	}
michael@0	63
michael@0	64	// Functions affecting <browser>.
michael@0	65
michael@0	66	function scrollViewportBy(dx, dy) {
michael@0	67	rootView().scrollBy(dx, dy);
michael@0	68	}
michael@0	69
michael@0	70	function scrollViewportTo(x, y) {
michael@0	71	rootView().scrollTo(x, y);
michael@0	72	}
michael@0	73
michael@0	74	function setViewportScale(xs, ys) {
michael@0	75	rootView().setScale(xs, ys);
michael@0	76	}
michael@0	77
michael@0	78	var kDelayMs = 100;
michael@0	79	var kDurationMs = 250;
michael@0	80	var scrolling = false;
michael@0	81	function startAnimatedScrollBy(dx, dy) {
michael@0	82	if (scrolling)
michael@0	83	throw "don't interrupt me!";
michael@0	84
michael@0	85	scrolling = true;
michael@0	86
michael@0	87	var start = mozAnimationStartTime;
michael@0	88	var end = start + kDurationMs;
michael@0	89	// |- k| so that we do something in first invocation of nudge()
michael@0	90	var prevNow = start - 20;
michael@0	91	var accumDx = 0, accumDy = 0;
michael@0	92
michael@0	93	var sentScrollBy = false;
michael@0	94	function nudgeScroll(now) {
michael@0	95	if (!scrolling) {
michael@0	96	// we've been canceled
michael@0	97	return;
michael@0	98	}
michael@0	99	var ddx = dx * (now - prevNow) / kDurationMs;
michael@0	100	var ddy = dy * (now - prevNow) / kDurationMs;
michael@0	101
michael@0	102	ddx = Math.min(dx - accumDx, ddx);
michael@0	103	ddy = Math.min(dy - accumDy, ddy);
michael@0	104	accumDx += ddx;
michael@0	105	accumDy += ddy;
michael@0	106
michael@0	107	rootView().scrollBy(ddx, ddy);
michael@0	108
michael@0	109	if (!sentScrollBy && 100 <= (now - start)) {
michael@0	110	messageManager.broadcastAsyncMessage("scrollBy",
michael@0	111	{ dx: dx, dy: dy });
michael@0	112	sentScrollBy = true;
michael@0	113	}
michael@0	114
michael@0	115	if (now >= end || (accumDx >= dx && accumDy >= dy)) {
michael@0	116	var fixupDx = Math.max(dx - accumDx, 0);
michael@0	117	var fixupDy = Math.max(dy - accumDy, 0);
michael@0	118	rootView().scrollBy(fixupDx, fixupDy);
michael@0	119
michael@0	120	scrolling = false;
michael@0	121	}
michael@0	122	else {
michael@0	123	mozRequestAnimationFrame(nudgeScroll);
michael@0	124	}
michael@0	125
michael@0	126	prevNow = now;
michael@0	127	}
michael@0	128
michael@0	129	nudgeScroll(start);
michael@0	130	mozRequestAnimationFrame(nudgeScroll);
michael@0	131	}