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Unified Diff: static/js/animation.js

Issue 4661048523096064: Issue 2120 - Add support for animations. (Closed)
Patch Set: Use base64 module for the base64 encoding in the inline_file filter. Created April 11, 2015, 2:04 p.m.
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Index: static/js/animation.js
diff --git a/static/js/animation.js b/static/js/animation.js
new file mode 100644
index 0000000000000000000000000000000000000000..96d14a25e25afa6bfbd3aad80e15da908cfebc71
--- /dev/null
+++ b/static/js/animation.js
@@ -0,0 +1,349 @@
+/*
+ * This file is part of the Adblock Plus website,
+ * Copyright (C) 2007-2015 Wladimir Palant
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
Sebastian Noack 2015/04/11 14:15:32 Well, this script isn't part of Adblock Plus but o
kzar 2015/04/12 17:01:45 Done.
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (typeof window.addEventListener != "undefined") {
+ window.addEventListener("load", initAnimations, false);
+ document.addEventListener("click", loadAnimation, false);
+}
+
+var ns = "https://adblockplus.org/animation";
+var loadPrefix = "animations/";
+var loadSuffix = ".xml";
+
+function initAnimations() {
+ var list = document.getElementsByTagNameNS(ns, "animation");
+ if (list.length == 0)
+ list = document.getElementsByTagName("animation"); // HTML mode, Anwiki
+ for (var i = 0; i < list.length; i++) {
+ var node = list[i];
+ if (!node.hasAttribute("name") || !node.hasAttribute("label"))
+ continue;
+
+ var animation = document.createElement("div");
+ animation.setAttribute("class", "animation");
+ animation.setAttribute("name", node.getAttribute("name"));
+ animation.setAttribute("started", false);
+ animation.style.margin = "5px";
+
+ var link = document.createElement("a");
+ link.appendChild(document.createTextNode(node.getAttribute("label")));
+ animation.appendChild(link);
+
+ node.parentNode.insertBefore(animation, node);
+ }
+}
+
+function loadAnimation(event) {
+ var animation = event.target;
+ while (animation && animation.nodeType == 1 && animation.className != "animation")
+ animation = animation.parentNode;
+
+ if (!animation || animation.nodeType != 1 || animation.getAttribute("started") == "true")
+ return;
+
+ animation.setAttribute("started", "true");
+
+ while (animation.firstChild)
+ animation.removeChild(animation.firstChild);
+
+ animation.style.border = "1px dashed black";
+ animation.style.padding = "10px";
+ animation.style.width = "50px";
+ animation.style.height = "50px";
+
+ var container = document.createElement("div");
+ container.style.width = "0px";
+ container.style.height = "0px";
+ container.style.overflow = "visible";
+ container.style.position = "relative";
+ container.style.visibility = "hidden";
+
+ var image = document.createElement("img");
+ container.appendChild(image);
+ animation.appendChild(container);
+
+ image.onload = function() {
+ container.style.left = Math.round((50 - image.width) / 2) + "px";
+ container.style.top = Math.round((50 - image.height) / 2) + "px";
+ container.style.visibility = "";
+ }
+ image.src = "data:image/gif;base64,R0lGODlhGAAYAPQAAP%2F%2F%2FwCA%2F87m%2Fvr8%2FuDv%2FrDX%2Fujz%2Fo7G%2Fsjj%2FpzN%2Ftjr%2FqjT%2FsDf%2FvL4%2Fna6%2FobC%2Frjb%2Fmiz%2FgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH%2BGkNyZWF0ZWQgd2l0aCBhamF4bG9hZC5pbmZvACH5BAAHAAAAIf8LTkVUU0NBUEUyLjADAQAAACwAAAAAGAAYAAAFriAgjiQAQWVaDgr5POSgkoTDjFE0NoQ8iw8HQZQTDQjDn4jhSABhAAOhoTqSDg7qSUQwxEaEwwFhXHhHgzOA1xshxAnfTzotGRaHglJqkJcaVEqCgyoCBQkJBQKDDXQGDYaIioyOgYSXA36XIgYMBWRzXZoKBQUMmil0lgalLSIClgBpO0g%2Bs26nUWddXyoEDIsACq5SsTMMDIECwUdJPw0Mzsu0qHYkw72bBmozIQAh%2BQQABwABACwAAAAAGAAYAAAFsCAgjiTAMGVaDgR5HKQwqKNxIKPjjFCk0KNXC6ATKSI7oAhxWIhezwhENTCQEoeGCdWIPEgzESGxEIgGBWstEW4QCGGAIJEoxGmGt5ZkgCRQQHkGd2CESoeIIwoMBQUMP4cNeQQGDYuNj4iSb5WJnmeGng0CDGaBlIQEJziHk3sABidDAHBgagButSKvAAoyuHuUYHgCkAZqebw0AgLBQyyzNKO3byNuoSS8x8OfwIchACH5BAAHAAIALAAAAAAYABgAAAW4ICCOJIAgZVoOBJkkpDKoo5EI43GMjNPSokXCINKJCI4HcCRIQEQvqIOhGhBHhUTDhGo4diOZyFAoKEQDxra2mAEgjghOpCgz3LTBIxJ5kgwMBShACREHZ1V4Kg1rS44pBAgMDAg%2FSw0GBAQGDZGTlY%2BYmpyPpSQDiqYiDQoCliqZBqkGAgKIS5kEjQ21VwCyp76dBHiNvz%2BMR74AqSOdVwbQuo%2Babppo10ssjdkAnc0rf8vgl8YqIQAh%2BQQABwADACwAAAAAGAAYAAAFrCAgjiQgCGVaDgZZFCQxqKNRKGOSjMjR0qLXTyciHA7AkaLACMIAiwOC1iAxCrMToHHYjWQiA4NBEA0Q1RpWxHg4cMXxNDk4OBxNUkPAQAEXDgllKgMzQA1pSYopBgonCj9JEA8REQ8QjY%2BRQJOVl4ugoYssBJuMpYYjDQSliwasiQOwNakALKqsqbWvIohFm7V6rQAGP6%2BJQLlFg7KDQLKJrLjBKbvAor3IKiEAIfkEAAcABAAsAAAAABgAGAAABbUgII4koChlmhokw5DEoI4NQ4xFMQoJO4uuhignMiQWvxGBIQC%2BAJBEUyUcIRiyE6CR0CllW4HABxBURTUw4nC4FcWo5CDBRpQaCoF7VjgsyCUDYDMNZ0mHdwYEBAaGMwwHDg4HDA2KjI4qkJKUiJ6faJkiA4qAKQkRB3E0i6YpAw8RERAjA4tnBoMApCMQDhFTuySKoSKMJAq6rD4GzASiJYtgi6PUcs9Kew0xh7rNJMqIhYchACH5BAAHAAUALAAAAAAYABgAAAW0ICCOJEAQZZo2JIKQxqCOjWCMDDMqxT2LAgELkBMZCoXfyCBQiFwiRsGpku0EshNgUNAtrYPT0GQVNRBWwSKBMp98P24iISgNDAS4ipGA6JUpA2WAhDR4eWM%2FCAkHBwkIDYcGiTOLjY%2BFmZkNlCN3eUoLDmwlDW%2BAAwcODl5bYl8wCVYMDw5UWzBtnAANEQ8kBIM0oAAGPgcREIQnVloAChEOqARjzgAQEbczg8YkWJq8nSUhACH5BAAHAAYALAAAAAAYABgAAAWtICCOJGAYZZoOpKKQqDoORDMKwkgwtiwSBBYAJ2owGL5RgxBziQQMgkwoMkhNqAEDARPSaiMDFdDIiRSFQowMXE8Z6RdpYHWnEAWGPVkajPmARVZMPUkCBQkJBQINgwaFPoeJi4GVlQ2Qc3VJBQcLV0ptfAMJBwdcIl%2BFYjALQgimoGNWIhAQZA4HXSpLMQ8PIgkOSHxAQhERPw7ASTSFyCMMDqBTJL8tf3y2fCEAIfkEAAcABwAsAAAAABgAGAAABa8gII4k0DRlmg6kYZCoOg5EDBDEaAi2jLO3nEkgkMEIL4BLpBAkVy3hCTAQKGAznM0AFNFGBAbj2cA9jQixcGZAGgECBu%2F9HnTp%2BFGjjezJFAwFBQwKe2Z%2BKoCChHmNjVMqA21nKQwJEJRlbnUFCQlFXlpeCWcGBUACCwlrdw8RKGImBwktdyMQEQciB7oACwcIeA4RVwAODiIGvHQKERAjxyMIB5QlVSTLYLZ0sW8hACH5BAAHAAgALAAAAAAYABgAAAW0ICCOJNA0ZZoOpGGQrDoOBCoSxNgQsQzgMZyIlvOJdi%2BAS2SoyXrK4umWPM5wNiV0UDUIBNkdoepTfMkA7thIECiyRtUAGq8fm2O4jIBgMBA1eAZ6Knx%2BgHaJR4QwdCMKBxEJRggFDGgQEREPjjAMBQUKIwIRDhBDC2QNDDEKoEkDoiMHDigICGkJBS2dDA6TAAnAEAkCdQ8ORQcHTAkLcQQODLPMIgIJaCWxJMIkPIoAt3EhACH5BAAHAAkALAAAAAAYABgAAAWtICCOJNA0ZZoOpGGQrDoOBCoSxNgQsQzgMZyIlvOJdi%2BAS2SoyXrK4umWHM5wNiV0UN3xdLiqr%2BmENcWpM9TIbrsBkEck8oC0DQqBQGGIz%2Bt3eXtob0ZTPgNrIwQJDgtGAgwCWSIMDg4HiiUIDAxFAAoODwxDBWINCEGdSTQkCQcoegADBaQ6MggHjwAFBZUFCm0HB0kJCUy9bAYHCCPGIwqmRq0jySMGmj6yRiEAIfkEAAcACgAsAAAAABgAGAAABbIgII4k0DRlmg6kYZCsOg4EKhLE2BCxDOAxnIiW84l2L4BLZKipBopW8XRLDkeCiAMyMvQAA%2BuON4JEIo%2BvqukkKQ6RhLHplVGN%2BLyKcXA4Dgx5DWwGDXx%2BgIKENnqNdzIDaiMECwcFRgQCCowiCAcHCZIlCgICVgSfCEMMnA0CXaU2YSQFoQAKUQMMqjoyAglcAAyBAAIMRUYLCUkFlybDeAYJryLNk6xGNCTQXY0juHghACH5BAAHAAsALAAAAAAYABgAAAWzICCOJNA0ZVoOAmkY5KCSSgSNBDE2hDyLjohClBMNij8RJHIQvZwEVOpIekRQJyJs5AMoHA%2BGMbE1lnm9EcPhOHRnhpwUl3AsknHDm5RN%2Bv8qCAkHBwkIfw1xBAYNgoSGiIqMgJQifZUjBhAJYj95ewIJCQV7KYpzBAkLLQADCHOtOpY5PgNlAAykAEUsQ1wzCgWdCIdeArczBQVbDJ0NAqyeBb64nQAGArBTt8R8mLuyPyEAOwAAAAAAAAAAAA%3D%3D";
+
+ var request = new XMLHttpRequest();
+ request.open("GET", loadPrefix + encodeURIComponent(animation.getAttribute("name")) + loadSuffix);
+ request.onload = function() {
+ if (!request.responseXML || !request.responseXML.documentElement)
+ return;
+
+ animation._data = request.responseXML.documentElement;
+ initAnimation(animation);
+ }
+ request.send(null);
+}
+
+function initAnimation(animation) {
+ while (animation.firstChild)
+ animation.removeChild(animation.firstChild);
+
+ var data = animation._data;
+ animation._width = (parseInt(data.getAttribute("width")) || 150);
+ animation._height = (parseInt(data.getAttribute("height")) || 150);
+ animation._stepSize = parseInt(data.getAttribute("step")) || 20;
+
+ animation.style.width = animation._width + "px";
+ animation.style.height = animation._height + "px";
+
+ var count = 0;
+ var initializer = function(event) {
+ count--;
+ if (count <= 0)
+ postInitAnimation(animation);
+ }
+
+ animation._objects = {};
+ var list = data.getElementsByTagNameNS(ns, "object");
+ for (var i = 0; i < list.length; i++) {
+ var node = list[i];
+ if (!node.hasAttribute("id") || !node.hasAttribute("src"))
+ continue;
+
+ count++;
+
+ var image = document.createElement("img");
+ image.addEventListener("load", initializer, false);
+ image.src = node.getAttribute("src");
+
+ var object = document.createElement("div");
+ object.style.width = "0px";
+ object.style.height = "0px";
+ object.style.overflow = "visible";
+ object.style.position = "relative";
+ object.style.visibility = "hidden";
+ object._anchor = node.getAttribute("anchor");
+ object._coords = [0,0];
+
+ object.appendChild(image);
+ animation.insertBefore(object, animation.firstChild);
+ animation._objects[node.getAttribute("id")] = object;
+ }
+}
+
+function postInitAnimation(animation) {
+ for (var key in animation._objects) {
+ var object = animation._objects[key];
+ var image = object.firstChild;
+
+ object._size = [image.width, image.height];
+ var offset = parseCoords(object._anchor);
+ if (offset) {
+ offset[0] = -offset[0];
+ offset[1] = -offset[1];
+ }
+ else {
+ offset = [0, 0];
+ if (object._anchor)
+ processAnchor(offset, object._anchor, [-image.width, -image.height]);
+ }
+ object._offset = offset;
+ }
+
+ animation._actions = [];
+
+ var getStepData = function(step) {
+ if (typeof animation._actions[step] == "undefined")
+ animation._actions[step] = [];
+
+ return animation._actions[step];
+ }
+
+ var list = animation._data.getElementsByTagNameNS(ns, "action");
+ var timestamp = 0;
+ for (var i = 0; i < list.length; i++) {
+ var node = list[i];
+ var prevTimestamp = timestamp;
+ timestamp += (parseInt(node.getAttribute("delay")) || 0);
+
+ // Update position for moving objects
+ for (var t = prevTimestamp + 1; t < timestamp; t++) {
+ if (typeof animation._actions[t] != "undefined") {
+ var curActions = animation._actions[t];
+ for (var j = 0; j < curActions.length; j++)
+ if (typeof curActions[j].obj != "undefined")
+ curActions[j].obj._coords = curActions[j].coords;
+ }
+ }
+
+ for (var child = node.firstChild; child; child = child.nextSibling) {
+ if (child.nodeType != 1)
+ continue;
+
+ var objects = child.getAttribute("object");
+ if (objects) {
+ objects = objects.split(/\s*,\s*/);
+ for (var j = 0; j < objects.length; j++) {
+ if (typeof animation._objects[objects[j]] == "undefined")
+ objects.splice(j--, 1);
+ else
+ objects[j] = animation._objects[objects[j]];
+ }
+ }
+ if (objects.length == 0)
+ continue;
+
+ if (child.localName == "show") {
+ var coords = parseRelativeCoords(animation._objects, child, "coords", "coordsOf", "anchor", "offset");
+ if (coords) {
+ var data = getStepData(timestamp);
+ for (var j = 0; j < objects.length; j++) {
+ objects[j]._coords = coords;
+ data.push({obj: objects[j], coords: coords});
+ }
+ }
+ }
+ else if (child.localName == "hide" || child.localName == "replace") {
+ var data = getStepData(timestamp);
+ data.push.apply(getStepData(timestamp), objects);
+ if (child.localName == "replace" && typeof animation._objects[child.getAttribute("with")] != "undefined") {
+ var object = animation._objects[child.getAttribute("with")];
+ object._coords = objects[0]._coords;
+ data.push({obj: object, coords: object._coords});
+ }
+ }
+ else if (child.localName == "move") {
+ var from = parseRelativeCoords(animation._objects, child, "fromCoords", "fromCoordsOf", "fromAnchor", "fromOffset");
+ var to = parseRelativeCoords(animation._objects, child, "toCoords", "toCoordsOf", "toAnchor", "toOffset");
+ var duration = parseInt(child.getAttribute("duration")) || 0;
+ if (to) {
+ if (!from)
+ from = objects[0]._coords;
+
+ for (var j = 0; j < objects.length; j++)
+ objects[j]._coords = from;
+
+ for (var t = timestamp; t <= timestamp + duration; t++) {
+ var curCoords = [
+ (timestamp + duration - t) / duration * from[0] + (t - timestamp) / duration * to[0],
+ (timestamp + duration - t) / duration * from[1] + (t - timestamp) / duration * to[1]
+ ];
+ var data = getStepData(t);
+ for (var j = 0; j < objects.length; j++)
+ data.push({obj: objects[j], coords: curCoords});
+ }
+ }
+ }
+ }
+ }
+
+ runAnimation(animation);
+}
+
+function executeAnimationStep(animation, timestamp) {
+ if (typeof animation._actions[timestamp] == "undefined")
+ return;
+
+ var action = animation._actions[timestamp];
+ for (var i = 0; i < action.length; i++) {
+ if (action[i] instanceof HTMLElement)
+ action[i].style.visibility = "hidden";
+ else {
+ action[i].obj.style.left = (action[i].coords[0] + action[i].obj._offset[0]) + "px";
+ action[i].obj.style.top = (action[i].coords[1] + action[i].obj._offset[1]) + "px";
+ action[i].obj.style.visibility = "";
+ }
+ }
+}
+
+function runAnimation(animation) {
+ if (typeof animation.scrollIntoView == "function")
+ animation.scrollIntoView(true)
+
+ executeAnimationStep(animation, 0);
+
+ var curStep = 0;
+ var interval = setInterval(function() {
+ executeAnimationStep(animation, ++curStep);
+ if (curStep >= animation._actions.length) {
+ clearInterval(interval);
+ animation.style.cursor = "pointer";
+ animation.addEventListener("click", restartAnimation, false);
+ }
+ }, animation._stepSize);
+}
+
+function restartAnimation(event) {
+ var animation = event.target;
+ while (animation && animation.nodeType == 1 && animation.className != "animation")
+ animation = animation.parentNode;
+
+ if (!animation || animation.nodeType != 1)
+ return;
+
+ animation.removeEventListener("click", restartAnimation, false);
+ animation.style.cursor = "";
+
+ for (var key in animation._objects)
+ animation._objects[key].style.visibility = "hidden";
+
+ runAnimation(animation);
+}
+
+function parseCoords(coords) {
+ if (!/^\s*([\-+]?\d+)\s*,\s*([\-+]?\d+)\s*$/.test(coords))
+ return null;
+
+ return [parseInt(RegExp.$1) || 0, parseInt(RegExp.$2) || 0];
+}
+
+function parseRelativeCoords(objects, node, coordsAttr, objectAttr, anchorAttr, offsetAttr) {
+ var coords = parseCoords(node.getAttribute(coordsAttr));
+ if (!coords) {
+ var object = node.getAttribute(objectAttr);
+ if (object && typeof objects[object] != "undefined") {
+ object = objects[object];
+ coords = object._coords.slice(0);
+
+ var anchor = node.getAttribute(anchorAttr);
+ if (anchor) {
+ coords[0] += object._offset[0];
+ coords[1] += object._offset[1];
+ processAnchor(coords, anchor, object._size);
+ }
+ }
+ }
+
+ if (coords) {
+ var offset = parseCoords(node.getAttribute(offsetAttr));
+ if (offset) {
+ coords[0] += offset[0];
+ coords[1] += offset[1];
+ }
+ }
+
+ return coords;
+}
+
+function processAnchor(coords, anchor, size) {
+ if (/right/i.test(anchor))
+ coords[0] += size[0];
+ else if (!/left/i.test(anchor))
+ coords[0] += Math.round(size[0]/2);
+
+ if (/bottom/i.test(anchor))
+ coords[1] += size[1];
+ else if (!/top/i.test(anchor))
+ coords[1] += Math.round(size[1]/2);
+}
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