add dialog to download articles for offline reading; start implementation

feedlist.js

@@ -30,6 +30,14 @@ function viewCategory(cat) {
 	return false;
 }
 
+function render_offline_feedlist() {
+	try {
+		// FIXME
+	} catch (e) {
+		exception_error("render_offline_feedlist", e);
+	}
+}
+
 function render_feedlist(data) {
 	try {
 

functions.js

@@ -579,11 +579,11 @@ function parse_counters(reply, scheduled_call) {
 				setTimeout('updateFeedList(false, false)', 50);
 			}
 		} else {
-			var fl = document.getElementById("feeds-frame").innerHTML;
+/*			var fl = document.getElementById("feeds-frame").innerHTML;
 			if (fl) {
 				cache_invalidate("FEEDLIST");
 				cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
-			}
+			} */
 		}
 
 	} catch (e) {

modules/backend-rpc.php

@@ -514,6 +514,34 @@
 			return;
 		}
 
+		if ($subop == "download") {
+			$stage = (int) $_REQUEST["stage"];
+
+			print "<rpc-reply>";
+
+			if ($stage == 0) {
+				print "<feeds>";
+
+				$reply = array();
+
+				$result = db_query($link, "SELECT id, title FROM
+					ttrss_feeds WHERE owner_uid = ".$_SESSION["uid"]);
+
+				while ($line = db_fetch_assoc($result)) {
+					print "<feed id=\"".$line["id"]."\"><![CDATA[";
+					print $line["title"];
+					print "]]></feed>";
+				}
+
+				print "</feeds>";
+
+			}
+
+			print "</rpc-reply>";
+
+			return;
+		}
+
 		print "<rpc-reply><error>Unknown method: $subop</error></rpc-reply>";
 	}
 ?>

modules/popup-dialog.php

@@ -461,6 +461,45 @@
 			return;
 		}
 
+		if ($id == "offlineDownload") {
+			print "<div id=\"infoBoxTitle\">".__('Download articles')."</div>";
+			print "<div class=\"infoBoxContents\">";
+
+			print "<form name='download_ops_form' id='download_ops_form'>";
+
+			print "<div class=\"dlgSec\">".__("Download")."</div>";
+
+			print "<div class=\"dlgSecCont\">";
+
+			$amount = array(
+				50  => 50,
+				100 => 100,
+				0   => "All unread");
+
+			print_select_hash("amount", 50, $amount);
+
+			print " " . __("newest articles for offline reading.");
+
+			print "</div>";
+
+			print "</form>";
+
+			print "<div class=\"dlgButtons\">
+			<div id=\"d_progress_o\" style=\"display : none\">
+				<div id=\"d_progress_i\"></div>
+			</div>
+				<input class=\"button\"					
+					type=\"submit\" onclick=\"return initiate_offline_download()\" value=\"".__('Download')."\">
+				<input class=\"button\"
+					type=\"submit\" onclick=\"return closeInfoBox()\" 
+					value=\"".__('Cancel')."\"></div>";
+
+			print "</div>";
+
+			return;
+		}
+
+
 		print "<div id='infoBoxTitle'>Internal Error</div>
 			<div id='infoBoxContents'>
 			<p>Unknown dialog <b>$id</b></p>

tt-rss.css

@@ -1976,6 +1976,20 @@ div#l_progress_i {
 	height : 10px;
 }
 
+div#d_progress_o {
+	width : 100px;
+	border : 1px solid black;
+	background-color : white;
+	float : left;
+	margin-left : 10px;
+}
+
+div#d_progress_i {
+	width : 10px;
+	background-color : #88b0f0;
+	height : 10px;
+}
+
 #content-insert {
 	background-color : white;
 	overflow : auto;

tt-rss.js

@@ -23,6 +23,7 @@ var offline_mode = false;
 var store = false;
 var localServer = false;
 var db = false;
+var download_progress_last = 0;
 
 function activeFeedIsCat() {
 	return _active_feed_is_cat;
@@ -135,7 +136,7 @@ function backend_sanity_check_callback(transport) {
 		}
 
 		if (!transport.responseXML) {
-			if (!google.gears) {
+			if (!window.google && !google.gears) {
 				fatalError(3, "Sanity check: Received reply is not XML", transport.responseText);
 			} else {
 				init_offline();
@@ -662,6 +663,11 @@ function quickMenuGo(opid) {
 			resize_headlines();
 		}
 
+		if (opid == "qmcDownload") {
+			displayDlg("offlineDownload");
+			return;
+		}
+
 		if (opid == "qmcResetCats") {
 
 			if (confirm(__("Reset category order?"))) {
@@ -1295,6 +1301,16 @@ function hotkey_handler(e) {
 				}
 			}
 
+			if (keycode == 68 && shift_key) { // D
+				initiate_offline_download();
+				return false;
+			}
+
+			if (keycode == 68) { // d
+				displayDlg("offlineDownload");
+				return false;
+			}
+
 			if (keycode == 87) { // w
 				feeds_sort_by_unread = !feeds_sort_by_unread;
 				return resort_feedlist();
@@ -1486,6 +1502,14 @@ function init_gears() {
 			db.open('tt-rss');
 
 			db.execute("CREATE TABLE IF NOT EXISTS cache (id text, article text, param text, added text)");
+
+			db.execute("CREATE TABLE if not exists offline_feeds (id integer, title text)");
+
+			db.execute("CREATE TABLE if not exists offline_data (id integer, feed_id integer, title text, updated text, content text, tags text)");
+
+			var qmcDownload = document.getElementById("qmcDownload");
+			if (qmcDownload) Element.show(qmcDownload);
+
 		}	
 	
 		cache_expire();
@@ -1499,8 +1523,7 @@ function init_offline() {
 	try {
 		offline_mode = true;
 
-		render_feedlist(cache_find("FEEDLIST"));
-		document.getElementById("quickMenuChooser").disabled = true;
+		render_offline_feedlist();
 
 		remove_splash();
 	} catch (e) {
@@ -1508,3 +1531,77 @@ function init_offline() {
 	}
 }
 
+function offline_download_parse(stage, transport) {
+	try {
+		if (transport.responseXML) {
+
+			if (stage == 0) {
+
+				var feeds = transport.responseXML.getElementsByTagName("feed");
+
+				if (feeds.length > 0) {
+					db.execute("DELETE FROM offline_feeds");
+				}
+
+				for (var i = 0; i < feeds.length; i++) {
+					var id = feeds[i].getAttribute("id");
+					var title = feeds[i].firstChild.nodeValue;
+	
+					db.execute("INSERT INTO offline_feeds (id,title) VALUES (?,?)",
+						[id, title]);
+				}
+		
+				window.setTimeout("initiate_offline_download("+(stage+1)+")", 50);
+			}
+
+			notify_info("All done.");
+
+		}
+	} catch (e) {
+		exception_error("offline_download_parse", e);
+	}
+}
+
+function download_set_progress(p) {
+	try {
+		var o = document.getElementById("d_progress_i");
+
+		if (!o) return;
+
+		Element.show(o);
+
+		new Effect.Scale(o, p, { 
+			scaleY : false,
+			scaleFrom : download_progress_last,
+			scaleMode: { originalWidth : 100 },
+			queue: { position: 'end', scope: 'LSP-Q', limit: 3 } }); 
+
+		download_progress_last = p;
+	} catch (e) {
+		exception_error("download_progress", e);
+	}
+}
+
+function initiate_offline_download(stage) {
+	try {
+
+		if (!stage) stage = 0;
+
+		notify_progress("Loading, please wait... S" + stage, true);
+		download_set_progress(20);
+
+		var query = "backend.php?op=rpc&subop=download&stage=" + stage;
+
+		if (document.getElementById("download_ops_form")) {
+			query = query + "&" + Form.serialize("download_ops_form");
+		}
+
+		new Ajax.Request(query, {
+			onComplete: function(transport) { 
+				offline_download_parse(stage, transport);				
+			} });
+
+	} catch (e) {
+		exception_error("initiate_offline_download", e);
+	}
+}

tt-rss.php

@@ -174,8 +174,9 @@ window.onload = init;
 					<option value="qmcAddFilter">&nbsp;&nbsp;<?php echo __('Create filter...') ?></option>
 					<option value="qmcResetUI">&nbsp;&nbsp;<?php echo __('Reset UI layout') ?></option>
 					<option value="qmcResetCats">&nbsp;&nbsp;<?php echo __('Reset category order') ?></option>
-
+					<option id="qmcDownload" style="display : none" value="qmcDownload"><?php echo __('&nbsp;&nbsp;Download new articles...') ?></option>
 					<option value="qmcHKhelp"><?php echo __('&nbsp;&nbsp;Keyboard shortcuts') ?></option>
+
 			</select>
 		</div>