Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Google Inc. |
| 3 | * Licensed to The Android Open Source Project. |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 18 | var BLOCKED_SRC_ATTR = "blocked-src"; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 19 | |
Andy Huang | 63b3c67 | 2012-10-05 19:27:28 -0700 | [diff] [blame] | 20 | // the set of Elements currently scheduled for processing in handleAllImageLoads |
| 21 | // this is an Array, but we treat it like a Set and only insert unique items |
| 22 | var gImageLoadElements = []; |
| 23 | |
Andy Huang | 02f9d18 | 2012-11-28 22:38:02 -0800 | [diff] [blame] | 24 | var gScaleInfo; |
| 25 | |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 26 | /** |
| 27 | * Returns the page offset of an element. |
| 28 | * |
| 29 | * @param {Element} element The element to return the page offset for. |
| 30 | * @return {left: number, top: number} A tuple including a left and top value representing |
| 31 | * the page offset of the element. |
| 32 | */ |
| 33 | function getTotalOffset(el) { |
| 34 | var result = { |
| 35 | left: 0, |
| 36 | top: 0 |
| 37 | }; |
| 38 | var parent = el; |
| 39 | |
| 40 | while (parent) { |
| 41 | result.left += parent.offsetLeft; |
| 42 | result.top += parent.offsetTop; |
| 43 | parent = parent.offsetParent; |
| 44 | } |
| 45 | |
| 46 | return result; |
| 47 | } |
| 48 | |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 49 | /** |
| 50 | * Walks up the DOM starting at a given element, and returns an element that has the |
| 51 | * specified class name or null. |
| 52 | */ |
| 53 | function up(el, className) { |
| 54 | var parent = el; |
| 55 | while (parent) { |
| 56 | if (parent.classList && parent.classList.contains(className)) { |
| 57 | break; |
| 58 | } |
| 59 | parent = parent.parentNode; |
| 60 | } |
| 61 | return parent || null; |
| 62 | } |
| 63 | |
Andy Huang | 02f9d18 | 2012-11-28 22:38:02 -0800 | [diff] [blame] | 64 | function getCachedValue(div, property, attrName) { |
| 65 | var value; |
| 66 | if (div.hasAttribute(attrName)) { |
| 67 | value = div.getAttribute(attrName); |
| 68 | } else { |
| 69 | value = div[property]; |
| 70 | div.setAttribute(attrName, value); |
| 71 | } |
| 72 | return value; |
| 73 | } |
| 74 | |
Andy Huang | df0d91c | 2012-10-08 18:44:42 -0700 | [diff] [blame] | 75 | function onToggleClick(e) { |
| 76 | toggleQuotedText(e.target); |
| 77 | measurePositions(); |
| 78 | } |
| 79 | |
| 80 | function toggleQuotedText(toggleElement) { |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 81 | var elidedTextElement = toggleElement.nextSibling; |
| 82 | var isHidden = getComputedStyle(elidedTextElement).display == 'none'; |
| 83 | toggleElement.innerHTML = isHidden ? MSG_HIDE_ELIDED : MSG_SHOW_ELIDED; |
| 84 | elidedTextElement.style.display = isHidden ? 'block' : 'none'; |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 85 | |
| 86 | // Revealing the elided text should normalize it to fit-width to prevent |
| 87 | // this message from blowing out the conversation width. |
| 88 | if (isHidden) { |
| 89 | normalizeElementWidths([elidedTextElement]); |
| 90 | } |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 91 | } |
| 92 | |
Andy Huang | 014ea4c | 2012-09-25 14:50:54 -0700 | [diff] [blame] | 93 | function collapseAllQuotedText() { |
Andy Huang | df0d91c | 2012-10-08 18:44:42 -0700 | [diff] [blame] | 94 | processQuotedText(document.documentElement, false /* showElided */); |
Andy Huang | 014ea4c | 2012-09-25 14:50:54 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Andy Huang | df0d91c | 2012-10-08 18:44:42 -0700 | [diff] [blame] | 97 | function processQuotedText(elt, showElided) { |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 98 | var i; |
Andy Huang | 014ea4c | 2012-09-25 14:50:54 -0700 | [diff] [blame] | 99 | var elements = elt.getElementsByClassName("elided-text"); |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 100 | var elidedElement, toggleElement; |
| 101 | for (i = 0; i < elements.length; i++) { |
| 102 | elidedElement = elements[i]; |
| 103 | toggleElement = document.createElement("div"); |
Andy Huang | 82119af | 2012-06-26 17:15:40 -0700 | [diff] [blame] | 104 | toggleElement.className = "mail-elided-text"; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 105 | toggleElement.innerHTML = MSG_SHOW_ELIDED; |
Andy Huang | df0d91c | 2012-10-08 18:44:42 -0700 | [diff] [blame] | 106 | toggleElement.onclick = onToggleClick; |
| 107 | elidedElement.style.display = 'none'; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 108 | elidedElement.parentNode.insertBefore(toggleElement, elidedElement); |
Andy Huang | df0d91c | 2012-10-08 18:44:42 -0700 | [diff] [blame] | 109 | if (showElided) { |
| 110 | toggleQuotedText(toggleElement); |
| 111 | } |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 112 | } |
| 113 | } |
| 114 | |
Andy Huang | 4cfe22a | 2012-10-15 18:20:33 -0700 | [diff] [blame] | 115 | function isConversationEmpty(bodyDivs) { |
| 116 | var i, len; |
| 117 | var msgBody; |
| 118 | var text; |
| 119 | |
| 120 | // Check if given divs are empty (in appearance), and disable zoom if so. |
| 121 | for (i = 0, len = bodyDivs.length; i < len; i++) { |
| 122 | msgBody = bodyDivs[i]; |
| 123 | // use 'textContent' to exclude markup when determining whether bodies are empty |
| 124 | // (fall back to more expensive 'innerText' if 'textContent' isn't implemented) |
| 125 | text = msgBody.textContent || msgBody.innerText; |
| 126 | if (text.trim().length > 0) { |
| 127 | return false; |
| 128 | } |
| 129 | } |
| 130 | return true; |
| 131 | } |
| 132 | |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 133 | function normalizeAllMessageWidths() { |
Andy Huang | 4cfe22a | 2012-10-15 18:20:33 -0700 | [diff] [blame] | 134 | var expandedBodyDivs; |
| 135 | var metaViewport; |
| 136 | var contentValues; |
| 137 | var isEmpty; |
| 138 | |
| 139 | if (!NORMALIZE_MESSAGE_WIDTHS) { |
| 140 | return; |
| 141 | } |
| 142 | |
| 143 | expandedBodyDivs = document.querySelectorAll(".expanded > .mail-message-content"); |
| 144 | |
| 145 | isEmpty = isConversationEmpty(expandedBodyDivs); |
| 146 | |
| 147 | normalizeElementWidths(expandedBodyDivs); |
| 148 | |
| 149 | // assemble a working <meta> viewport "content" value from the base value in the |
| 150 | // document, plus any dynamically determined options |
| 151 | metaViewport = document.getElementById("meta-viewport"); |
| 152 | contentValues = [metaViewport.getAttribute("content")]; |
| 153 | if (isEmpty) { |
| 154 | contentValues.push(metaViewport.getAttribute("data-zoom-off")); |
| 155 | } else { |
| 156 | contentValues.push(metaViewport.getAttribute("data-zoom-on")); |
| 157 | } |
| 158 | metaViewport.setAttribute("content", contentValues.join(",")); |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | /* |
| 162 | * Normalizes the width of all elements supplied to the document body's overall width. |
| 163 | * Narrower elements are zoomed in, and wider elements are zoomed out. |
| 164 | * This method is idempotent. |
| 165 | */ |
| 166 | function normalizeElementWidths(elements) { |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 167 | var i; |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 168 | var el; |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 169 | var documentWidth; |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 170 | var newZoom, oldZoom; |
Andy Huang | 256b35c | 2012-08-22 15:19:13 -0700 | [diff] [blame] | 171 | |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 172 | if (!NORMALIZE_MESSAGE_WIDTHS) { |
| 173 | return; |
| 174 | } |
| 175 | |
| 176 | documentWidth = document.body.offsetWidth; |
| 177 | |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 178 | for (i = 0; i < elements.length; i++) { |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 179 | el = elements[i]; |
| 180 | oldZoom = el.style.zoom; |
| 181 | // reset any existing normalization |
| 182 | if (oldZoom) { |
| 183 | el.style.zoom = 1; |
| 184 | } |
| 185 | newZoom = documentWidth / el.scrollWidth; |
| 186 | el.style.zoom = newZoom; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 187 | } |
| 188 | } |
| 189 | |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 190 | function hideAllUnsafeImages() { |
| 191 | hideUnsafeImages(document.getElementsByClassName("mail-message-content")); |
| 192 | } |
| 193 | |
| 194 | function hideUnsafeImages(msgContentDivs) { |
| 195 | var i, msgContentCount; |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 196 | var j, imgCount; |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 197 | var msgContentDiv, image; |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 198 | var images; |
| 199 | var showImages; |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 200 | for (i = 0, msgContentCount = msgContentDivs.length; i < msgContentCount; i++) { |
| 201 | msgContentDiv = msgContentDivs[i]; |
| 202 | showImages = msgContentDiv.classList.contains("mail-show-images"); |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 203 | |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 204 | images = msgContentDiv.getElementsByTagName("img"); |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 205 | for (j = 0, imgCount = images.length; j < imgCount; j++) { |
| 206 | image = images[j]; |
Paul Westbrook | 41dca18 | 2012-08-07 10:43:42 -0700 | [diff] [blame] | 207 | rewriteRelativeImageSrc(image); |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 208 | attachImageLoadListener(image); |
| 209 | // TODO: handle inline image attachments for all supported protocols |
| 210 | if (!showImages) { |
| 211 | blockImage(image); |
| 212 | } |
| 213 | } |
| 214 | } |
| 215 | } |
| 216 | |
Paul Westbrook | 41dca18 | 2012-08-07 10:43:42 -0700 | [diff] [blame] | 217 | /** |
| 218 | * Changes relative paths to absolute path by pre-pending the account uri |
| 219 | * @param {Element} imgElement Image for which the src path will be updated. |
| 220 | */ |
| 221 | function rewriteRelativeImageSrc(imgElement) { |
| 222 | var src = imgElement.src; |
Paul Westbrook | cebcc64 | 2012-08-08 10:06:04 -0700 | [diff] [blame] | 223 | |
| 224 | // DOC_BASE_URI will always be a unique x-thread:// uri for this particular conversation |
| 225 | if (src.indexOf(DOC_BASE_URI) == 0 && (DOC_BASE_URI != CONVERSATION_BASE_URI)) { |
| 226 | // The conversation specifies a different base uri than the document |
| 227 | src = CONVERSATION_BASE_URI + src.substring(DOC_BASE_URI.length); |
| 228 | imgElement.src = src; |
Paul Westbrook | 41dca18 | 2012-08-07 10:43:42 -0700 | [diff] [blame] | 229 | } |
| 230 | }; |
| 231 | |
| 232 | |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 233 | function attachImageLoadListener(imageElement) { |
| 234 | // Reset the src attribute to the empty string because onload will only fire if the src |
| 235 | // attribute is set after the onload listener. |
| 236 | var originalSrc = imageElement.src; |
| 237 | imageElement.src = ''; |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 238 | imageElement.onload = imageOnLoad; |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 239 | imageElement.src = originalSrc; |
| 240 | } |
| 241 | |
Andy Huang | 63b3c67 | 2012-10-05 19:27:28 -0700 | [diff] [blame] | 242 | /** |
| 243 | * Handle an onload event for an <img> tag. |
| 244 | * The image could be within an elided-text block, or at the top level of a message. |
| 245 | * When a new image loads, its new bounds may affect message or elided-text geometry, |
| 246 | * so we need to inspect and adjust the enclosing element's zoom level where necessary. |
| 247 | * |
| 248 | * Because this method can be called really often, and zoom-level adjustment is slow, |
| 249 | * we collect the elements to be processed and do them all later in a single deferred pass. |
| 250 | */ |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 251 | function imageOnLoad(e) { |
| 252 | // normalize the quoted text parent if we're in a quoted text block, or else |
| 253 | // normalize the parent message content element |
| 254 | var parent = up(e.target, "elided-text") || up(e.target, "mail-message-content"); |
Andy Huang | 63b3c67 | 2012-10-05 19:27:28 -0700 | [diff] [blame] | 255 | if (!parent) { |
| 256 | // sanity check. shouldn't really happen. |
| 257 | return; |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 258 | } |
Andy Huang | 63b3c67 | 2012-10-05 19:27:28 -0700 | [diff] [blame] | 259 | |
| 260 | // if there was no previous work, schedule a new deferred job |
| 261 | if (gImageLoadElements.length == 0) { |
| 262 | window.setTimeout(handleAllImageOnLoads, 0); |
| 263 | } |
| 264 | |
| 265 | // enqueue the work if it wasn't already enqueued |
| 266 | if (gImageLoadElements.indexOf(parent) == -1) { |
| 267 | gImageLoadElements.push(parent); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | // handle all deferred work from image onload events |
| 272 | function handleAllImageOnLoads() { |
| 273 | normalizeElementWidths(gImageLoadElements); |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 274 | measurePositions(); |
Andy Huang | 63b3c67 | 2012-10-05 19:27:28 -0700 | [diff] [blame] | 275 | // clear the queue so the next onload event starts a new job |
| 276 | gImageLoadElements = []; |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 279 | function blockImage(imageElement) { |
| 280 | var src = imageElement.src; |
Paul Westbrook | 41dca18 | 2012-08-07 10:43:42 -0700 | [diff] [blame] | 281 | if (src.indexOf("http://") == 0 || src.indexOf("https://") == 0 || |
| 282 | src.indexOf("content://") == 0) { |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 283 | imageElement.setAttribute(BLOCKED_SRC_ATTR, src); |
| 284 | imageElement.src = "data:"; |
| 285 | } |
| 286 | } |
| 287 | |
Andy Huang | 2301470 | 2012-07-09 12:50:36 -0700 | [diff] [blame] | 288 | function setWideViewport() { |
| 289 | var metaViewport = document.getElementById('meta-viewport'); |
| 290 | metaViewport.setAttribute('content', 'width=' + WIDE_VIEWPORT_WIDTH); |
| 291 | } |
| 292 | |
Andy Huang | e964eee | 2012-10-02 19:24:58 -0700 | [diff] [blame] | 293 | function restoreScrollPosition() { |
| 294 | var scrollYPercent = window.mail.getScrollYPercent(); |
| 295 | if (scrollYPercent && document.body.offsetHeight > window.innerHeight) { |
| 296 | document.body.scrollTop = Math.floor(scrollYPercent * document.body.offsetHeight); |
| 297 | } |
| 298 | } |
| 299 | |
Andy Huang | bffc312 | 2012-10-05 21:20:56 -0700 | [diff] [blame] | 300 | function onContentReady(event) { |
| 301 | window.mail.onContentReady(); |
| 302 | } |
| 303 | |
| 304 | function setupContentReady() { |
| 305 | var signalDiv; |
| 306 | |
| 307 | // PAGE READINESS SIGNAL FOR JELLYBEAN AND NEWER |
| 308 | // Notify the app on 'webkitAnimationStart' of a simple dummy element with a simple no-op |
| 309 | // animation that immediately runs on page load. The app uses this as a signal that the |
| 310 | // content is loaded and ready to draw, since WebView delays firing this event until the |
| 311 | // layers are composited and everything is ready to draw. |
| 312 | // |
| 313 | // This code is conditionally enabled on JB+ by setting the ENABLE_CONTENT_READY flag. |
| 314 | if (ENABLE_CONTENT_READY) { |
| 315 | signalDiv = document.getElementById("initial-load-signal"); |
| 316 | signalDiv.addEventListener("webkitAnimationStart", onContentReady, false); |
Andy Huang | bffc312 | 2012-10-05 21:20:56 -0700 | [diff] [blame] | 317 | } |
| 318 | } |
| 319 | |
Andy Huang | 2301470 | 2012-07-09 12:50:36 -0700 | [diff] [blame] | 320 | // BEGIN Java->JavaScript handlers |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 321 | function measurePositions() { |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 322 | var overlayTops, overlayBottoms; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 323 | var i; |
| 324 | var len; |
| 325 | |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 326 | var expandedBody, headerSpacer; |
| 327 | var prevBodyBottom = 0; |
| 328 | var expandedBodyDivs = document.querySelectorAll(".expanded > .mail-message-content"); |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 329 | |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 330 | // N.B. offsetTop and offsetHeight of an element with the "zoom:" style applied cannot be |
| 331 | // trusted. |
| 332 | |
| 333 | overlayTops = new Array(expandedBodyDivs.length + 1); |
| 334 | overlayBottoms = new Array(expandedBodyDivs.length + 1); |
| 335 | for (i = 0, len = expandedBodyDivs.length; i < len; i++) { |
| 336 | expandedBody = expandedBodyDivs[i]; |
| 337 | headerSpacer = expandedBody.previousElementSibling; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 338 | // addJavascriptInterface handler only supports string arrays |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 339 | overlayTops[i] = "" + prevBodyBottom; |
| 340 | overlayBottoms[i] = "" + (getTotalOffset(headerSpacer).top + headerSpacer.offsetHeight); |
| 341 | prevBodyBottom = getTotalOffset(expandedBody.nextElementSibling).top; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 342 | } |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 343 | // add an extra one to mark the top/bottom of the last message footer spacer |
| 344 | overlayTops[i] = "" + prevBodyBottom; |
Andy Huang | 7bdc375 | 2012-03-25 17:18:19 -0700 | [diff] [blame] | 345 | overlayBottoms[i] = "" + document.body.offsetHeight; |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 346 | |
Andy Huang | adbf3e8 | 2012-10-13 13:30:19 -0700 | [diff] [blame] | 347 | window.mail.onWebContentGeometryChange(overlayTops, overlayBottoms); |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 348 | } |
| 349 | |
Scott Kennedy | eb9a4bd | 2012-11-12 10:33:04 -0800 | [diff] [blame] | 350 | function unblockImages(messageDomIds) { |
| 351 | var i, j, images, imgCount, image, blockedSrc; |
| 352 | for (j = 0, len = messageDomIds.length; j < len; j++) { |
| 353 | var messageDomId = messageDomIds[j]; |
| 354 | var msg = document.getElementById(messageDomId); |
| 355 | if (!msg) { |
| 356 | console.log("can't unblock, no matching message for id: " + messageDomId); |
| 357 | continue; |
| 358 | } |
| 359 | images = msg.getElementsByTagName("img"); |
| 360 | for (i = 0, imgCount = images.length; i < imgCount; i++) { |
| 361 | image = images[i]; |
| 362 | blockedSrc = image.getAttribute(BLOCKED_SRC_ATTR); |
| 363 | if (blockedSrc) { |
| 364 | image.src = blockedSrc; |
| 365 | image.removeAttribute(BLOCKED_SRC_ATTR); |
| 366 | } |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 367 | } |
| 368 | } |
| 369 | } |
Andy Huang | c754357 | 2012-04-03 15:34:29 -0700 | [diff] [blame] | 370 | |
Mark Wei | ab2d998 | 2012-09-25 13:06:17 -0700 | [diff] [blame] | 371 | function setConversationHeaderSpacerHeight(spacerHeight) { |
| 372 | var spacer = document.getElementById("conversation-header"); |
| 373 | if (!spacer) { |
| 374 | console.log("can't set spacer for conversation header"); |
| 375 | return; |
| 376 | } |
| 377 | spacer.style.height = spacerHeight + "px"; |
| 378 | measurePositions(); |
| 379 | } |
| 380 | |
Andy Huang | c754357 | 2012-04-03 15:34:29 -0700 | [diff] [blame] | 381 | function setMessageHeaderSpacerHeight(messageDomId, spacerHeight) { |
| 382 | var spacer = document.querySelector("#" + messageDomId + " > .mail-message-header"); |
| 383 | if (!spacer) { |
| 384 | console.log("can't set spacer for message with id: " + messageDomId); |
| 385 | return; |
| 386 | } |
| 387 | spacer.style.height = spacerHeight + "px"; |
| 388 | measurePositions(); |
| 389 | } |
| 390 | |
| 391 | function setMessageBodyVisible(messageDomId, isVisible, spacerHeight) { |
| 392 | var i, len; |
| 393 | var visibility = isVisible ? "block" : "none"; |
| 394 | var messageDiv = document.querySelector("#" + messageDomId); |
| 395 | var collapsibleDivs = document.querySelectorAll("#" + messageDomId + " > .collapsible"); |
| 396 | if (!messageDiv || collapsibleDivs.length == 0) { |
| 397 | console.log("can't set body visibility for message with id: " + messageDomId); |
| 398 | return; |
| 399 | } |
| 400 | messageDiv.classList.toggle("expanded"); |
| 401 | for (i = 0, len = collapsibleDivs.length; i < len; i++) { |
| 402 | collapsibleDivs[i].style.display = visibility; |
| 403 | } |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 404 | |
| 405 | // revealing new content should trigger width normalization, since the initial render |
| 406 | // skips collapsed and super-collapsed messages |
| 407 | if (isVisible) { |
| 408 | normalizeElementWidths(messageDiv.getElementsByClassName("mail-message-content")); |
| 409 | } |
| 410 | |
Andy Huang | c754357 | 2012-04-03 15:34:29 -0700 | [diff] [blame] | 411 | setMessageHeaderSpacerHeight(messageDomId, spacerHeight); |
| 412 | } |
Andy Huang | 46dfba6 | 2012-04-19 01:47:32 -0700 | [diff] [blame] | 413 | |
| 414 | function replaceSuperCollapsedBlock(startIndex) { |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 415 | var parent, block, msg; |
Andy Huang | 46dfba6 | 2012-04-19 01:47:32 -0700 | [diff] [blame] | 416 | |
| 417 | block = document.querySelector(".mail-super-collapsed-block[index='" + startIndex + "']"); |
| 418 | if (!block) { |
| 419 | console.log("can't expand super collapsed block at index: " + startIndex); |
| 420 | return; |
| 421 | } |
| 422 | parent = block.parentNode; |
| 423 | block.innerHTML = window.mail.getTempMessageBodies(); |
| 424 | |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 425 | // process the new block contents in one go before we pluck them out of the common ancestor |
| 426 | processQuotedText(block, false /* showElided */); |
| 427 | hideUnsafeImages(block.getElementsByClassName("mail-message-content")); |
| 428 | |
| 429 | msg = block.firstChild; |
| 430 | while (msg) { |
| 431 | parent.insertBefore(msg, block); |
| 432 | msg = block.firstChild; |
Andy Huang | 46dfba6 | 2012-04-19 01:47:32 -0700 | [diff] [blame] | 433 | } |
| 434 | parent.removeChild(block); |
| 435 | measurePositions(); |
| 436 | } |
mindyp | 3bcf180 | 2012-09-09 11:17:00 -0700 | [diff] [blame] | 437 | |
Andy Huang | 014ea4c | 2012-09-25 14:50:54 -0700 | [diff] [blame] | 438 | function replaceMessageBodies(messageIds) { |
| 439 | var i; |
| 440 | var id; |
| 441 | var msgContentDiv; |
| 442 | |
| 443 | for (i = 0, len = messageIds.length; i < len; i++) { |
| 444 | id = messageIds[i]; |
| 445 | msgContentDiv = document.querySelector("#" + id + " > .mail-message-content"); |
| 446 | msgContentDiv.innerHTML = window.mail.getMessageBody(id); |
Andy Huang | df0d91c | 2012-10-08 18:44:42 -0700 | [diff] [blame] | 447 | processQuotedText(msgContentDiv, true /* showElided */); |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 448 | hideUnsafeImages([msgContentDiv]); |
Andy Huang | 014ea4c | 2012-09-25 14:50:54 -0700 | [diff] [blame] | 449 | } |
Andy Huang | 91d782a | 2012-10-25 12:37:29 -0700 | [diff] [blame] | 450 | measurePositions(); |
Andy Huang | 014ea4c | 2012-09-25 14:50:54 -0700 | [diff] [blame] | 451 | } |
| 452 | |
Andy Huang | 06c0362 | 2012-10-22 18:59:45 -0700 | [diff] [blame] | 453 | // handle the special case of adding a single new message at the end of a conversation |
| 454 | function appendMessageHtml() { |
| 455 | var msg = document.createElement("div"); |
| 456 | msg.innerHTML = window.mail.getTempMessageBodies(); |
| 457 | msg = msg.children[0]; // toss the outer div, it was just to render innerHTML into |
| 458 | document.body.appendChild(msg); |
| 459 | processQuotedText(msg, true /* showElided */); |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 460 | hideUnsafeImages(msg.getElementsByClassName("mail-message-content")); |
Andy Huang | 91d782a | 2012-10-25 12:37:29 -0700 | [diff] [blame] | 461 | measurePositions(); |
Andy Huang | 06c0362 | 2012-10-22 18:59:45 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Andy Huang | 02f9d18 | 2012-11-28 22:38:02 -0800 | [diff] [blame] | 464 | function onScaleBegin(screenX, screenY) { |
| 465 | // console.log("JS got scaleBegin x/y=" + screenX + "/" + screenY); |
| 466 | var focusX = screenX + document.body.scrollLeft; |
| 467 | var focusY = screenY + document.body.scrollTop; |
| 468 | var i, len; |
| 469 | var msgDivs = document.getElementsByClassName("mail-message"); |
| 470 | var msgDiv, msgBodyDiv; |
| 471 | var msgTop, msgDivTop, nextMsgTop; |
| 472 | var initialH; |
| 473 | var initialScale; |
| 474 | var scaledOriginX, scaledOriginY; |
| 475 | var translateX, translateY; |
| 476 | var origin; |
| 477 | |
| 478 | gScaleInfo = undefined; |
| 479 | |
| 480 | for (i = 0, len = msgDivs.length; i < len; i++) { |
| 481 | msgDiv = msgDivs[i]; |
| 482 | msgTop = nextMsgTop ? nextMsgTop : getTotalOffset(msgDiv).top; |
| 483 | nextMsgTop = (i < len-1) ? getTotalOffset(msgDivs[i+1]).top : document.body.offsetHeight; |
| 484 | if (focusY >= msgTop && focusY < nextMsgTop) { |
| 485 | msgBodyDiv = msgDiv.children[1]; |
| 486 | initialScale = msgBodyDiv.getAttribute("data-initial-scale") || 1.0; |
| 487 | |
| 488 | msgDivTop = getTotalOffset(msgBodyDiv).top; |
| 489 | |
| 490 | scaledOriginX = focusX;// / initialScale; |
| 491 | scaledOriginY = (focusY - msgDivTop);// / initialScale; |
| 492 | |
| 493 | translateX = scaledOriginX * (initialScale - 1.0) / initialScale; |
| 494 | translateY = scaledOriginY * (initialScale - 1.0) / initialScale; |
| 495 | |
| 496 | gScaleInfo = { |
| 497 | div: msgBodyDiv, |
| 498 | divTop: msgDivTop, |
| 499 | initialScale: initialScale, |
| 500 | initialX: focusX, |
| 501 | initialY: focusY, |
| 502 | translateX: translateX, |
| 503 | translateY: translateY, |
| 504 | initialH: getCachedValue(msgBodyDiv, "offsetHeight", "data-initial-height"), |
| 505 | minScale: Math.min(document.body.offsetWidth / msgBodyDiv.scrollWidth, 1.0), |
| 506 | currScale: initialScale |
| 507 | }; |
| 508 | |
| 509 | origin = scaledOriginX + "px " + scaledOriginY + "px"; |
| 510 | msgBodyDiv.classList.add("zooming-focused"); |
| 511 | msgBodyDiv.style.webkitTransformOrigin = origin; |
| 512 | msgBodyDiv.style.webkitTransform = "scale3d(" + initialScale + "," + initialScale |
| 513 | + ",1) translate3d(" + translateX + "px," + translateY + "px,0)"; |
| 514 | // console.log("scaleBegin, h=" + gScaleInfo.initialH + " origin='" + origin + "'"); |
| 515 | break; |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | function onScaleEnd(screenX, screenY) { |
| 521 | var msgBodyDiv; |
| 522 | var scale; |
| 523 | var h; |
| 524 | if (!gScaleInfo) { |
| 525 | return; |
| 526 | } |
| 527 | |
| 528 | // console.log("JS got scaleEnd x/y=" + screenX + "/" + screenY); |
| 529 | msgBodyDiv = gScaleInfo.div; |
| 530 | scale = gScaleInfo.currScale; |
| 531 | msgBodyDiv.style.webkitTransformOrigin = "0 0"; |
| 532 | // clear any translate |
| 533 | msgBodyDiv.style.webkitTransform = "scale3d(" + scale + "," + scale + ",1)"; |
| 534 | // switching to a 2D transform here re-renders the fonts more clearly, but introduces |
| 535 | // texture upload lag to any subsequent scale operation |
| 536 | //msgBodyDiv.style.webkitTransform = "scale(" + gScaleInfo.currScale + ")"; |
| 537 | h = gScaleInfo.initialH * scale; |
| 538 | // console.log("onScaleEnd set h=" + h); |
| 539 | msgBodyDiv.style.height = h + "px"; |
| 540 | msgBodyDiv.classList.remove("zooming-focused"); |
| 541 | msgBodyDiv.setAttribute("data-initial-scale", scale); |
| 542 | } |
| 543 | |
| 544 | function onScale(relativeScale, screenX, screenY) { |
| 545 | var focusX, focusY; |
| 546 | var scale; |
| 547 | var translateX, translateY; |
| 548 | var transform; |
| 549 | |
| 550 | if (!gScaleInfo) { |
| 551 | return; |
| 552 | } |
| 553 | focusX = screenX + document.body.scrollLeft; |
| 554 | focusY = screenY + document.body.scrollTop; |
| 555 | |
| 556 | scale = Math.max(gScaleInfo.initialScale * relativeScale, gScaleInfo.minScale); |
| 557 | if (scale > 4.0) { |
| 558 | scale = 4.0; |
| 559 | } |
| 560 | gScaleInfo.currScale = scale; |
| 561 | translateX = focusX - gScaleInfo.initialX; |
| 562 | translateY = focusY - gScaleInfo.initialY; |
| 563 | transform = "translate3d(" + translateX + "px," + translateY + "px,0) scale3d(" |
| 564 | + scale + "," + scale + ",1) translate3d(" + gScaleInfo.translateX + "px," |
| 565 | + gScaleInfo.translateY + "px,0)"; |
| 566 | gScaleInfo.div.style.webkitTransform = transform; |
| 567 | // console.log("JS got scale=" + relativeScale + " x/y=" + screenX + "/" + screenY |
| 568 | // + " transform='" + transform + "'"); |
| 569 | } |
| 570 | |
Andy Huang | 3233bff | 2012-03-20 19:38:45 -0700 | [diff] [blame] | 571 | // END Java->JavaScript handlers |
| 572 | |
Andy Huang | 4cfe22a | 2012-10-15 18:20:33 -0700 | [diff] [blame] | 573 | // Do this first to ensure that the readiness signal comes through, |
| 574 | // even if a stray exception later occurs. |
| 575 | setupContentReady(); |
| 576 | |
Andy Huang | 014ea4c | 2012-09-25 14:50:54 -0700 | [diff] [blame] | 577 | collapseAllQuotedText(); |
Andy Huang | f500db8 | 2012-10-23 16:56:27 -0700 | [diff] [blame] | 578 | hideAllUnsafeImages(); |
Andy Huang | ffc725f | 2012-10-01 14:48:02 -0700 | [diff] [blame] | 579 | normalizeAllMessageWidths(); |
Andy Huang | 2301470 | 2012-07-09 12:50:36 -0700 | [diff] [blame] | 580 | //setWideViewport(); |
Andy Huang | e964eee | 2012-10-02 19:24:58 -0700 | [diff] [blame] | 581 | restoreScrollPosition(); |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 582 | measurePositions(); |
Andy Huang | f70fc40 | 2012-02-17 15:37:42 -0800 | [diff] [blame] | 583 | |