Merge pull request GoogleChrome#359 from beaufortfrancois/addGalleryW…

…atch [media-gallery] Added Gallery Watch feature
benaslinjenner · Feb 15, 2015 · eb038f4 · eb038f4
2 parents 591fc9c + 65f54db
commit eb038f4
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Showing 2 changed files with 20 additions and 1 deletion.
diff --git a/samples/media-gallery/manifest.json b/samples/media-gallery/manifest.json
@@ -1,6 +1,6 @@
 {
   "name": "Media Gallery Sample",
-  "version": "0.2.4",
+  "version": "0.2.5",
   "manifest_version": 2,
   "description": "Used to test Media Gallery API",
   "permissions": [{

diff --git a/samples/media-gallery/media-gallery.js b/samples/media-gallery/media-gallery.js
@@ -208,6 +208,8 @@ function scanGalleries(fs) {
    gGalleryData[gGalleryIndex] = new GalleryData(mData.galleryId);
    gGalleryReader = fs.root.createReader();
    gGalleryReader.readEntries(scanGallery, errorPrintFactory('readEntries'));
+
+   chrome.mediaGalleries.addGalleryWatch(mData.galleryId, onGalleryWatchAdded);
 }
 
 function getGalleriesInfo(results) {
@@ -234,9 +236,23 @@ function getGalleriesInfo(results) {
    else {
       document.getElementById("status").innerText = 'No galleries found';
       document.getElementById("read-button").disabled = "disabled";
+      clearList();
    }
 }
 
+function onGalleryChanged(result) {
+  if (result.type === 'contents_changed') {
+    // read galleries again if change was detected.
+    document.getElementById('read-button').click();
+  }
+}
+
+function onGalleryWatchAdded() {
+  if (chrome.runtime.lastError) {
+    console.log("Gallery watch not added", chrome.runtime.lastError.message);
+  }
+}
+
 window.addEventListener("load", function() {
    // __MGA__bRestart is set in the launcher code to indicate that the app was
    // restarted instead of being normally launched
@@ -264,6 +280,7 @@ window.addEventListener("load", function() {
    document.getElementById('read-button').addEventListener("click", function () {
       clearContentDiv();
       clearList();
+      gGalleryIndex = 0;
       if (gGalleryArray.length > 0) {
          scanGalleries(gGalleryArray[0]);
       }
@@ -295,3 +312,5 @@ chrome.mediaGalleries.onScanProgress.addListener(function(details) {
   if (details.type != 'start')
    document.getElementById('scan-button').innerHTML = 'Search for Galleries';
 });
+
+chrome.mediaGalleries.onGalleryChanged.addListener(onGalleryChanged);