1 files changed, 74 insertions, 0 deletions
diff --git a/comm/mailnews/base/prefs/content/am-archiveoptions.js b/comm/mailnews/base/prefs/content/am-archiveoptions.js
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index 0000000000..44c0817149
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+++ b/comm/mailnews/base/prefs/content/am-archiveoptions.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var gIdentity = null;
+
+window.addEventListener("load", onLoadArchiveOptions);
+document.addEventListener("dialogaccept", onAcceptArchiveOptions);
+
+/**
+ * Load the archive options dialog, set the radio/checkbox items to the
+ * appropriate values, and update the archive hierarchy example.
+ */
+function onLoadArchiveOptions() {
+  // extract the account
+  gIdentity = window.arguments[0].identity;
+
+  let granularity = document.getElementById("archiveGranularity");
+  granularity.selectedIndex = gIdentity.archiveGranularity;
+  granularity.addEventListener("command", updateArchiveExample);
+
+  let kfs = document.getElementById("archiveKeepFolderStructure");
+  kfs.checked = gIdentity.archiveKeepFolderStructure;
+  kfs.addEventListener("command", updateArchiveExample);
+
+  updateArchiveExample();
+}
+
+/**
+ * Save the archive settings to the current identity.
+ */
+function onAcceptArchiveOptions() {
+  gIdentity.archiveGranularity =
+    document.getElementById("archiveGranularity").selectedIndex;
+  gIdentity.archiveKeepFolderStructure = document.getElementById(
+    "archiveKeepFolderStructure"
+  ).checked;
+}
+
+/**
+ * Update the example tree to show what the current options would look like.
+ */
+function updateArchiveExample() {
+  let granularity = document.getElementById("archiveGranularity").selectedIndex;
+  let kfs = document.getElementById("archiveKeepFolderStructure").checked;
+  let hierarchy = [
+    document.getElementsByClassName("root"),
+    document.getElementsByClassName("year"),
+    document.getElementsByClassName("month"),
+  ];
+
+  // First, show/hide the appropriate levels in the hierarchy and turn the
+  // necessary items into containers.
+  for (let i = 0; i < hierarchy.length; i++) {
+    for (let j = 0; j < hierarchy[i].length; j++) {
+      hierarchy[i][j].setAttribute("container", granularity > i);
+      hierarchy[i][j].setAttribute("open", granularity > i);
+      hierarchy[i][j].hidden = granularity < i;
+    }
+  }
+
+  // Next, handle the "keep folder structures" case by moving a tree item around
+  // and making sure its parent is a container.
+  let folders = document.getElementById("folders");
+  folders.hidden = !kfs;
+  if (kfs) {
+    let parent = hierarchy[granularity][0];
+    parent.setAttribute("container", true);
+    parent.setAttribute("open", true);
+
+    let treechildren = parent.children[1];
+    treechildren.appendChild(folders);
+  }
+}