offline: add progress indicator; tweak download intervals and amount of articles

[tt-rss.git] / offline.js

diff --git a/offline.js b/offline.js
index e6b77ed772881e47d961d5d8c9dfdfbcf0d28c8a..974fa74916555bc4a4eb5e62b7203b8539bf8504 100644 (file)
--- a/offline.js
+++ b/offline.js
@@ -4,6 +4,8 @@ var offline_mode = false;
 var store = false;
 var localServer = false;
 var db = false;
+var articles_synced = 0;
+var sync_in_progress = false;
 
 function view_offline(id, feed_id) {
        try {
@@ -564,6 +566,7 @@ function render_offline_feedlist() {
 function init_offline() {
        try {
                offline_mode = true;
+               store.enabled = true;
 
                Element.hide("dispSwitchPrompt");
                Element.hide("feedBrowserPrompt");
@@ -720,6 +723,12 @@ function offline_download_parse(stage, transport) {
 
                                debug("downloaded articles: " + articles_found + " limit: " + limit);
 
+                               articles_synced += articles_found;
+
+                               var msg =__("Synchronizing (got %d articles)...").replace("%d", articles_synced);
+
+                               $("offlineModeSyncMsg").innerHTML = msg;
+
                                var has_sync_data = has_local_sync_data();
 
                                if (articles_found >= limit || has_sync_data) {
@@ -730,13 +739,34 @@ function offline_download_parse(stage, transport) {
                                        window.setTimeout("update_offline_data(0)", 180*1000);
                                        debug("update_offline_data: finished");
 
-                                       var pic = $("restartOfflinePic");
+                                       var pic = $("offlineModePic");
 
                                        if (pic) { 
                                                pic.src = "images/offline.png";
-                                               pic.title = __("Restart in offline mode");
+
+                                               var rs = db.execute("SELECT value FROM syncdata WHERE key = 'last_online'");
+                                               var last_sync = "";
+
+                                               if (rs.isValidRow()) {
+                                                       last_sync = rs.field(0).substring(0,16);
+                                               }
+                                               rs.close();
+
+                                               var msg = __("Last sync: %s").replace("%s", last_sync);
+
+                                               articles_synced = 0;
+
+                                               $("offlineModeSyncMsg").innerHTML = msg;                                        
                                        }                        
 
+                                       var hide_elems = $$("div.hideWhenSyncing");
+
+                                       for (var j = 0; j < hide_elems.length; j++) {
+                                               Element.show(hide_elems[j]);
+                                       }
+
+                                       sync_in_progress = false;
+
                                        db.execute("DELETE FROM articles WHERE "+
                                                "updated < DATETIME('NOW', 'localtime', '-31 days')");
 
@@ -758,6 +788,7 @@ function update_offline_data(stage) {
        try {
 
                if (!stage) stage = 0;
+
                if (!db || offline_mode || getInitParam("offline_enabled") != "1") return;
 
 //             notify_progress("Updating offline data... (" + stage +")", true);
@@ -790,12 +821,22 @@ function update_offline_data(stage) {
 
                debug(query + "/" + to_sync);
 
-               var pic = $("restartOfflinePic");
+               var pic = $("offlineModePic");
 
                if (pic) {
                        pic.src = "images/offline-sync.gif";
-                       pic.title = __("Synchronizing offline data...");
+                       if (articles_synced == 0) {
+                               $("offlineModeSyncMsg").innerHTML = __("Synchronizing...");
+                       }
+               }
+
+               var hide_elems = $$("div.hideWhenSyncing");
+
+               for (var j = 0; j < hide_elems.length; j++) {
+                       Element.hide(hide_elems[j]);
                }
+               
+               sync_in_progress = true;
 
                new Ajax.Request(query, {
                        parameters: to_sync,
@@ -959,8 +1000,8 @@ function enable_offline_reading() {
 
                if (db && getInitParam("offline_enabled") == "1") {
                        init_local_sync_data();
-                       Element.show("restartOfflinePic");
-                       window.setTimeout("update_offline_data(0)", 100);
+                       Element.show("offlineModePic");
+                       offlineDownloadStart();
                }
 
        } catch (e) {
@@ -974,8 +1015,9 @@ function init_gears() {
                if (window.google && google.gears) {
                        localServer = google.gears.factory.create("beta.localserver");
                        store = localServer.createManagedStore("tt-rss");
-                       store.manifestUrl = "manifest.json.php";
+                       store.manifestUrl = "manifest.json.php";                
                        store.checkForUpdate();
+                       store.enabled = false;
 
                        db = google.gears.factory.create('beta.database');
                        db.open('tt-rss');
@@ -1454,3 +1496,50 @@ function catchup_local_feed(id, is_cat) {
                exception_error("catchup_local_feed", e);
        }
 }
+
+function toggleOfflineModeInfo() {
+       try {
+               var e = $('offlineModeDrop');
+               var p = $('offlineModePic');
+               
+               if (Element.visible(e)) {
+                       Element.hide(e);
+               } else {
+                       Element.show(e);
+               }
+
+       } catch (e) {
+               exception_error("toggleOfflineModeInfo", e);
+       }
+}
+
+function offlineDownloadStart() {
+       try {
+               if (db && !sync_in_progress && getInitParam("offline_enabled") == "1") {
+                       window.setTimeout("update_offline_data(0)", 100);
+               }
+       } catch (e) {
+               exception_error("offlineDownloadStart", e);
+       }
+}
+
+function offlineClearData() {
+       try {
+               if (db) {
+
+                       if (confirm(__("Remove offline data?"))) {
+
+                               notify_progress("Removing offline data...");
+
+                               db.execute("DELETE FROM articles");
+                               db.execute("DELETE FROM article_labels");
+                               db.execute("DELETE FROM labels");
+                               db.execute("DELETE FROM feeds");
+
+                               notify_info("Offline data removed");
+                       }
+               }
+       } catch (e) {
+               exception_error("offlineClearData", e);
+       }
+}