[tt-rss.git] / js / viewfeed.js

var article_cache = new Array();

var _active_article_id = 0;

var vgroup_last_feed = false;
var post_under_pointer = false;

var last_requested_article = false;

var catchup_id_batch = [];
var catchup_timeout_id = false;

var cids_requested = [];
var loaded_article_ids = [];
var _last_headlines_update = 0;
var _headlines_scroll_offset = 0;
var current_first_id = 0;

var _catchup_request_sent = false;

var has_storage = 'sessionStorage' in window && window['sessionStorage'] !== null;

function headlines_callback2(transport, offset, background, infscroll_req) {
	try {
		handle_rpc_json(transport);

		console.log("headlines_callback2 [offset=" + offset + "] B:" + background + " I:" + infscroll_req);

		var is_cat = false;
		var feed_id = false;

		var reply = false;

		try {
			reply = JSON.parse(transport.responseText);
		} catch (e) {
			console.error(e);
		}

		if (reply) {

			is_cat = reply['headlines']['is_cat'];
			feed_id = reply['headlines']['id'];

			if (background) {
				var content = reply['headlines']['content'];

				content = content + "<div id='headlines-spacer'></div>";
				return;
			}

			if (feed_id != -7 && (feed_id != getActiveFeedId() || is_cat != activeFeedIsCat()))
				return;

			/* dijit.getEnclosingWidget(
				document.forms["main_toolbar_form"].update).attr('disabled',
					is_cat || feed_id <= 0); */

			try {
				if (infscroll_req == false) {
					$("headlines-frame").scrollTop = 0;

					$("floatingTitle").style.visibility = "hidden";
					$("floatingTitle").setAttribute("data-article-id", 0);
					$("floatingTitle").innerHTML = "";
				}
			} catch (e) { };

			$("headlines-frame").removeClassName("cdm");
			$("headlines-frame").removeClassName("normal");

			$("headlines-frame").addClassName(isCdmMode() ? "cdm" : "normal");

			var headlines_count = reply['headlines-info']['count'];

			vgroup_last_feed = reply['headlines-info']['vgroup_last_feed'];

			if (parseInt(headlines_count) < 30) {
				_infscroll_disable = 1;
			} else {
				_infscroll_disable = 0;
			}

			current_first_id = reply['headlines']['first_id'];
			var counters = reply['counters'];
			var articles = reply['articles'];
			//var runtime_info = reply['runtime-info'];

			if (infscroll_req == false) {
				loaded_article_ids = [];

				dojo.html.set($("headlines-toolbar"),
						reply['headlines']['toolbar'],
						{parseContent: true});

				/*dojo.html.set($("headlines-frame"),
					reply['headlines']['content'],
					{parseContent: true});

				$$("#headlines-frame div[id*='RROW']").each(function(row) {
					loaded_article_ids.push(row.id);
				});*/

				$("headlines-frame").innerHTML = '';

				var tmp = new Element("div");
				tmp.innerHTML = reply['headlines']['content'];
				dojo.parser.parse(tmp);

				while (tmp.hasChildNodes()) {
					var row = tmp.removeChild(tmp.firstChild);

					if (loaded_article_ids.indexOf(row.id) == -1 || row.hasClassName("cdmFeedTitle")) {
						dijit.byId("headlines-frame").domNode.appendChild(row);

						loaded_article_ids.push(row.id);
					}
				}

				var hsp = $("headlines-spacer");
				if (!hsp) hsp = new Element("DIV", {"id": "headlines-spacer"});
				dijit.byId('headlines-frame').domNode.appendChild(hsp);

				initHeadlinesMenu();

				if (_infscroll_disable)
					hsp.innerHTML = "<a href='#' onclick='openNextUnreadFeed()'>" +
						__("Click to open next unread feed.") + "</a>";

				if (_search_query) {
					$("feed_title").innerHTML += "<span id='cancel_search'>" +
						" (<a href='#' onclick='cancelSearch()'>" + __("Cancel search") + "</a>)" +
						"</span>";
				}

			} else {

				if (headlines_count > 0 && feed_id == getActiveFeedId() && is_cat == activeFeedIsCat()) {
					console.log("adding some more headlines: " + headlines_count);

					var c = dijit.byId("headlines-frame");
					var ids = getSelectedArticleIds2();

					var hsp = $("headlines-spacer");

					if (hsp)
						c.domNode.removeChild(hsp);

					var tmp = new Element("div");
					tmp.innerHTML = reply['headlines']['content'];
					dojo.parser.parse(tmp);

					while (tmp.hasChildNodes()) {
						var row = tmp.removeChild(tmp.firstChild);

						if (loaded_article_ids.indexOf(row.id) == -1 || row.hasClassName("cdmFeedTitle")) {
							dijit.byId("headlines-frame").domNode.appendChild(row);

							loaded_article_ids.push(row.id);
						}
					}

					if (!hsp) hsp = new Element("DIV", {"id": "headlines-spacer"});
					c.domNode.appendChild(hsp);

					if (headlines_count < 30) _infscroll_disable = true;

					console.log("restore selected ids: " + ids);

					for (var i = 0; i < ids.length; i++) {
						markHeadline(ids[i]);
					}

					initHeadlinesMenu();

					if (_infscroll_disable) {
						hsp.innerHTML = "<a href='#' onclick='openNextUnreadFeed()'>" +
						__("Click to open next unread feed.") + "</a>";
					}

				} else {
					console.log("no new headlines received");

					var first_id_changed = reply['headlines']['first_id_changed'];
					console.log("first id changed:" + first_id_changed);

					var hsp = $("headlines-spacer");

					if (hsp) {
						if (first_id_changed) {
							hsp.innerHTML = "<a href='#' onclick='viewCurrentFeed()'>" +
							__("New articles found, reload feed to continue.") + "</a>";
						} else {
							hsp.innerHTML = "<a href='#' onclick='openNextUnreadFeed()'>" +
							__("Click to open next unread feed.") + "</a>";
						}

					}

				}
			}

			if (articles) {
				for (var i = 0; i < articles.length; i++) {
					var a_id = articles[i]['id'];
					cache_set("article:" + a_id, articles[i]['content']);
				}
			} else {
				console.log("no cached articles received");
			}

			if (counters)
				parse_counters(counters);
			else
				request_counters(true);

		} else {
			console.error("Invalid object received: " + transport.responseText);
			dijit.byId("headlines-frame").attr('content', "<div class='whiteBox'>" +
					__('Could not update headlines (invalid object received - see error console for details)') +
					"</div>");
		}

		_infscroll_request_sent = 0;
		_last_headlines_update = new Date().getTime();

		unpackVisibleHeadlines();

		// if we have some more space in the buffer, why not try to fill it

		if (!_infscroll_disable && $("headlines-spacer") &&
				$("headlines-spacer").offsetTop < $("headlines-frame").offsetHeight) {

			window.setTimeout(function() {
				loadMoreHeadlines();
			}, 250);
		}

		notify("");

	} catch (e) {
		exception_error("headlines_callback2", e, transport);
	}
}

function render_article(article) {
	try {
		cleanup_memory("content-insert");

		dijit.byId("headlines-wrap-inner").addChild(
				dijit.byId("content-insert"));

		var c = dijit.byId("content-insert");

		try {
			c.domNode.scrollTop = 0;
		} catch (e) { };

		c.attr('content', article);
		PluginHost.run(PluginHost.HOOK_ARTICLE_RENDERED, c.domNode);

		correctHeadlinesOffset(getActiveArticleId());

		try {
			c.focus();
		} catch (e) { };

	} catch (e) {
		exception_error("render_article", e);
	}
}

function showArticleInHeadlines(id, noexpand) {

	try {
		var row = $("RROW-" + id);
		if (!row) return;

		if (!noexpand)
			row.removeClassName("Unread");

		row.addClassName("active");

		selectArticles('none');

		markHeadline(id);

	} catch (e) {
		exception_error("showArticleInHeadlines", e);
	}
}

function article_callback2(transport, id) {
	try {
		console.log("article_callback2 " + id);

		handle_rpc_json(transport);

		var reply = false;

		try {
			reply = JSON.parse(transport.responseText);
		} catch (e) {
			console.error(e);
		}

		if (reply) {

			reply.each(function(article) {
				if (getActiveArticleId() == article['id']) {
					render_article(article['content']);
				}
				cids_requested.remove(article['id']);

				cache_set("article:" + article['id'], article['content']);
			});

//			if (id != last_requested_article) {
//				console.log("requested article id is out of sequence, aborting");
//				return;
//			}

		} else {
			console.error("Invalid object received: " + transport.responseText);

			render_article("<div class='whiteBox'>" +
					__('Could not display article (invalid object received - see error console for details)') + "</div>");
		}

		var unread_in_buffer = $$("#headlines-frame > div[id*=RROW][class*=Unread]").length
		request_counters(unread_in_buffer == 0);

		notify("");
	} catch (e) {
		exception_error("article_callback2", e, transport);
	}
}

function view(id, activefeed, noexpand) {
	try {
		var oldrow = $("RROW-" + getActiveArticleId());
		if (oldrow) oldrow.removeClassName("active");

		var crow = $("RROW-" + id);

		if (!crow) return;
		if (noexpand) {
			setActiveArticleId(id);
			showArticleInHeadlines(id, noexpand);
			return;
		}

		console.log("loading article: " + id);

		var cached_article = cache_get("article:" + id);

		console.log("cache check result: " + (cached_article != false));

		var query = "?op=article&method=view&id=" + param_escape(id);

		var neighbor_ids = getRelativePostIds(id);

		/* only request uncached articles */

		var cids_to_request = [];

		for (var i = 0; i < neighbor_ids.length; i++) {
			if (cids_requested.indexOf(neighbor_ids[i]) == -1)
				if (!cache_get("article:" + neighbor_ids[i])) {
					cids_to_request.push(neighbor_ids[i]);
					cids_requested.push(neighbor_ids[i]);
				}
		}

		console.log("additional ids: " + cids_to_request.toString());

		query = query + "&cids=" + cids_to_request.toString();

		var article_is_unread = crow.hasClassName("Unread");

		setActiveArticleId(id);
		showArticleInHeadlines(id);

		if (cached_article && article_is_unread) {

			query = query + "&mode=prefetch";

			render_article(cached_article);

		} else if (cached_article) {

			query = query + "&mode=prefetch_old";
			render_article(cached_article);

			// if we don't need to request any relative ids, we might as well skip
			// the server roundtrip altogether
			if (cids_to_request.length == 0) {
				return;
			}
		}

		last_requested_article = id;

		console.log(query);

		if (article_is_unread) {
			decrementFeedCounter(getActiveFeedId(), activeFeedIsCat());
		}

		new Ajax.Request("backend.php", {
			parameters: query,
			onComplete: function(transport) {
				article_callback2(transport, id);
			} });

		return false;

	} catch (e) {
		exception_error("view", e);
	}
}

function toggleMark(id, client_only) {
	try {
		var query = "?op=rpc&id=" + id + "&method=mark";

		var row = $("RROW-" + id);
		if (!row) return;

		var imgs = [];

		var row_imgs = row.getElementsByClassName("markedPic");

		for (var i = 0; i < row_imgs.length; i++)
			imgs.push(row_imgs[i]);

		var ft = $("floatingTitle");

		if (ft && ft.getAttribute("data-article-id") == id) {
			var fte = ft.getElementsByClassName("markedPic");

			for (var i = 0; i < fte.length; i++)
				imgs.push(fte[i]);
		}

		for (i = 0; i < imgs.length; i++) {
			var img = imgs[i];

			if (!row.hasClassName("marked")) {
				img.src = img.src.replace("mark_unset", "mark_set");
				img.alt = __("Unstar article");
				query = query + "&mark=1";
			} else {
				img.src = img.src.replace("mark_set", "mark_unset");
				img.alt = __("Star article");
				query = query + "&mark=0";
			}
		}

		row.toggleClassName("marked");

		if (!client_only) {
			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					handle_rpc_json(transport);
				} });
		}

	} catch (e) {
		exception_error("toggleMark", e);
	}
}

function togglePub(id, client_only, no_effects, note) {
	try {
		var query = "?op=rpc&id=" + id + "&method=publ";

		if (note != undefined) {
			query = query + "&note=" + param_escape(note);
		} else {
			query = query + "&note=undefined";
		}

		var row = $("RROW-" + id);
		if (!row) return;

		var imgs = [];

		var row_imgs = row.getElementsByClassName("pubPic");

		for (var i = 0; i < row_imgs.length; i++)
			imgs.push(row_imgs[i]);

		var ft = $("floatingTitle");

		if (ft && ft.getAttribute("data-article-id") == id) {
			var fte = ft.getElementsByClassName("pubPic");

			for (var i = 0; i < fte.length; i++)
				imgs.push(fte[i]);
		}

		for (i = 0; i < imgs.length; i++) {
			var img = imgs[i];

			if (!row.hasClassName("published") || note != undefined) {
				img.src = img.src.replace("pub_unset", "pub_set");
				img.alt = __("Unpublish article");
				query = query + "&pub=1";
			} else {
				img.src = img.src.replace("pub_set", "pub_unset");
				img.alt = __("Publish article");
				query = query + "&pub=0";
			}
		}

		if (note != undefined)
			row.addClassName("published");
		else
			row.toggleClassName("published");

		if (!client_only) {
			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					handle_rpc_json(transport);
				} });
		}

	} catch (e) {
		exception_error("togglePub", e);
	}
}

function moveToPost(mode, noscroll, noexpand) {

	try {

		var rows = getLoadedArticleIds();

		var prev_id = false;
		var next_id = false;

		if (!$('RROW-' + getActiveArticleId())) {
			setActiveArticleId(0);
		}

		if (!getActiveArticleId()) {
			next_id = rows[0];
			prev_id = rows[rows.length-1]
		} else {
			for (var i = 0; i < rows.length; i++) {
				if (rows[i] == getActiveArticleId()) {

					// Account for adjacent identical article ids.
					if (i > 0) prev_id = rows[i-1];

					for (var j = i+1; j < rows.length; j++) {
						if (rows[j] != getActiveArticleId()) {
							next_id = rows[j];
							break;
						}
					}
					break;
				}
			}
		}

		console.log("cur: " + getActiveArticleId() + " next: " + next_id);

		if (mode == "next") {
		 	if (next_id || getActiveArticleId()) {
				if (isCdmMode()) {

					var article = $("RROW-" + getActiveArticleId());
					var ctr = $("headlines-frame");

					if (!noscroll && article && article.offsetTop + article.offsetHeight >
							ctr.scrollTop + ctr.offsetHeight) {

						scrollArticle(ctr.offsetHeight/4);

					} else if (next_id) {
						cdmExpandArticle(next_id, noexpand);
						cdmScrollToArticleId(next_id, true);
					}

				} else if (next_id) {
					correctHeadlinesOffset(next_id);
					view(next_id, getActiveFeedId(), noexpand);
				}
			}
		}

		if (mode == "prev") {
			if (prev_id || getActiveArticleId()) {
				if (isCdmMode()) {

					var article = $("RROW-" + getActiveArticleId());
					var prev_article = $("RROW-" + prev_id);
					var ctr = $("headlines-frame");

					if (!getInitParam("cdm_expanded")) {

						if (!noscroll && article && article.offsetTop < ctr.scrollTop) {
							scrollArticle(-ctr.offsetHeight/4);
						} else {
							cdmExpandArticle(prev_id, noexpand);
							cdmScrollToArticleId(prev_id, true);
						}
					} else {

						if (!noscroll && article && article.offsetTop < ctr.scrollTop) {
							scrollArticle(-ctr.offsetHeight/3);
						} else if (!noscroll && prev_article &&
								prev_article.offsetTop < ctr.scrollTop) {
							cdmExpandArticle(prev_id, noexpand);
							scrollArticle(-ctr.offsetHeight/4);
						} else if (prev_id) {
							cdmExpandArticle(prev_id, noexpand);
							cdmScrollToArticleId(prev_id, noscroll);
						}
					}

				} else if (prev_id) {
					correctHeadlinesOffset(prev_id);
					view(prev_id, getActiveFeedId(), noexpand);
				}
			}
		}

	} catch (e) {
		exception_error("moveToPost", e);
	}
}

function toggleSelected(id, force_on) {
	try {
		var row = $("RROW-" + id);

		if (row) {
			var cb = dijit.getEnclosingWidget(
					row.getElementsByClassName("rchk")[0]);

			if (row.hasClassName('Selected') && !force_on) {
				row.removeClassName('Selected');
				if (cb) cb.attr("checked", false);
			} else {
				row.addClassName('Selected');
				if (cb) cb.attr("checked", true);
			}
		}

		updateSelectedPrompt();
	} catch (e) {
		exception_error("toggleSelected", e);
	}
}

function updateSelectedPrompt() {
	try {
		var count = getSelectedArticleIds2().size();
		var elem = $("selected_prompt");

		if (elem) {
			elem.innerHTML = ngettext("%d article selected",
					"%d articles selected", count).replace("%d", count);

			if (count > 0)
				Element.show(elem);
			else
				Element.hide(elem);
		}

	} catch (e) {
		exception_error("updateSelectedPrompt", e);
	}
}

function toggleUnread(id, cmode, effect) {
	try {

		var row = $("RROW-" + id);
		if (row) {
			var tmpClassName = row.className;

			if (cmode == undefined || cmode == 2) {
				if (row.hasClassName("Unread")) {
					row.removeClassName("Unread");

				} else {
					row.addClassName("Unread");
				}

			} else if (cmode == 0) {

				row.removeClassName("Unread");

			} else if (cmode == 1) {
				row.addClassName("Unread");
			}

			if (cmode == undefined) cmode = 2;

			var query = "?op=rpc&method=catchupSelected" +
				"&cmode=" + param_escape(cmode) + "&ids=" + param_escape(id);

//			notify_progress("Loading, please wait...");

			if (tmpClassName != row.className) {
				new Ajax.Request("backend.php", {
					parameters: query,
					onComplete: function (transport) {
						handle_rpc_json(transport);
					}
				});
			}

		}

	} catch (e) {
		exception_error("toggleUnread", e);
	}
}

function selectionRemoveLabel(id, ids) {
	try {

		if (!ids) ids = getSelectedArticleIds2();

		if (ids.length == 0) {
			alert(__("No articles are selected."));
			return;
		}

		var query = "?op=article&method=removeFromLabel&ids=" +
			param_escape(ids.toString()) + "&lid=" + param_escape(id);

		console.log(query);

		new Ajax.Request("backend.php", {
			parameters: query,
			onComplete: function(transport) {
				handle_rpc_json(transport);
				show_labels_in_headlines(transport);
			} });

	} catch (e) {
		exception_error("selectionAssignLabel", e);

	}
}

function selectionAssignLabel(id, ids) {
	try {

		if (!ids) ids = getSelectedArticleIds2();

		if (ids.length == 0) {
			alert(__("No articles are selected."));
			return;
		}

		var query = "?op=article&method=assignToLabel&ids=" +
			param_escape(ids.toString()) + "&lid=" + param_escape(id);

		console.log(query);

		new Ajax.Request("backend.php", {
			parameters: query,
			onComplete: function(transport) {
				handle_rpc_json(transport);
				show_labels_in_headlines(transport);
			} });

	} catch (e) {
		exception_error("selectionAssignLabel", e);

	}
}

function selectionToggleUnread(set_state, callback, no_error, ids) {
	try {
		var rows = ids ? ids : getSelectedArticleIds2();

		if (rows.length == 0 && !no_error) {
			alert(__("No articles are selected."));
			return;
		}

		for (var i = 0; i < rows.length; i++) {
			var row = $("RROW-" + rows[i]);
			if (row) {
				if (set_state == undefined) {
					if (row.hasClassName("Unread")) {
						row.removeClassName("Unread");
					} else {
						row.addClassName("Unread");
					}
				}

				if (set_state == false) {
					row.removeClassName("Unread");
				}

				if (set_state == true) {
					row.addClassName("Unread");
				}
			}
		}

		updateFloatingTitle(true);

		if (rows.length > 0) {

			var cmode = "";

			if (set_state == undefined) {
				cmode = "2";
			} else if (set_state == true) {
				cmode = "1";
			} else if (set_state == false) {
				cmode = "0";
			}

			var query = "?op=rpc&method=catchupSelected" +
				"&cmode=" + cmode + "&ids=" + param_escape(rows.toString());

			notify_progress("Loading, please wait...");

			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					handle_rpc_json(transport);
					if (callback) callback(transport);
				} });

		}

	} catch (e) {
		exception_error("selectionToggleUnread", e);
	}
}

// sel_state ignored
function selectionToggleMarked(sel_state, callback, no_error, ids) {
	try {

		var rows = ids ? ids : getSelectedArticleIds2();

		if (rows.length == 0 && !no_error) {
			alert(__("No articles are selected."));
			return;
		}

		for (var i = 0; i < rows.length; i++) {
			toggleMark(rows[i], true, true);
		}

		if (rows.length > 0) {

			var query = "?op=rpc&method=markSelected&ids=" +
				param_escape(rows.toString()) + "&cmode=2";

			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					handle_rpc_json(transport);
					if (callback) callback(transport);
				} });

		}

	} catch (e) {
		exception_error("selectionToggleMarked", e);
	}
}

// sel_state ignored
function selectionTogglePublished(sel_state, callback, no_error, ids) {
	try {

		var rows = ids ? ids : getSelectedArticleIds2();

		if (rows.length == 0 && !no_error) {
			alert(__("No articles are selected."));
			return;
		}

		for (var i = 0; i < rows.length; i++) {
			togglePub(rows[i], true, true);
		}

		if (rows.length > 0) {

			var query = "?op=rpc&method=publishSelected&ids=" +
				param_escape(rows.toString()) + "&cmode=2";

			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					handle_rpc_json(transport);
				} });

		}

	} catch (e) {
		exception_error("selectionToggleMarked", e);
	}
}

function getSelectedArticleIds2() {

	var rv = [];

	$$("#headlines-frame > div[id*=RROW][class*=Selected]").each(
		function(child) {
			rv.push(child.getAttribute("data-article-id"));
		});

	return rv;
}

function getLoadedArticleIds() {
	var rv = [];

	var children = $$("#headlines-frame > div[id*=RROW-]");

	children.each(function(child) {
		if (Element.visible(child)) {
			rv.push(child.getAttribute("data-article-id"));
		}
	});

	return rv;

}

// mode = all,none,unread,invert,marked,published
function selectArticles(mode, query) {
	try {

		if (!query) query = "#headlines-frame > div[id*=RROW]";

		var children = $$(query);

		children.each(function(child) {
			var id = child.getAttribute("data-article-id");

			var cb = dijit.getEnclosingWidget(
					child.getElementsByClassName("rchk")[0]);

			if (mode == "all") {
				child.addClassName("Selected");
				if (cb) cb.attr("checked", true);
			} else if (mode == "unread") {
				if (child.hasClassName("Unread")) {
					child.addClassName("Selected");
					if (cb) cb.attr("checked", true);
				} else {
					child.removeClassName("Selected");
					if (cb) cb.attr("checked", false);
				}
			} else if (mode == "marked") {
				if (child.hasClassName("marked")) {
					child.addClassName("Selected");
					if (cb) cb.attr("checked", true);
				} else {
					child.removeClassName("Selected");
					if (cb) cb.attr("checked", false);
				}
			} else if (mode == "published") {
				if (child.hasClassName("published")) {
					child.addClassName("Selected");
					if (cb) cb.attr("checked", true);
				} else {
					child.removeClassName("Selected");
					if (cb) cb.attr("checked", false);
				}

			} else if (mode == "invert") {
				if (child.hasClassName("Selected")) {
					child.removeClassName("Selected");
					if (cb) cb.attr("checked", false);
				} else {
					child.addClassName("Selected");
					if (cb) cb.attr("checked", true);
				}

			} else {
				child.removeClassName("Selected");
				if (cb) cb.attr("checked", false);
			}
		});

		updateSelectedPrompt();

	} catch (e) {
		exception_error("selectArticles", e);
	}
}

function deleteSelection() {

	try {

		var rows = getSelectedArticleIds2();

		if (rows.length == 0) {
			alert(__("No articles are selected."));
			return;
		}

		var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());
		var str;

		if (getActiveFeedId() != 0) {
			str = ngettext("Delete %d selected article in %s?", "Delete %d selected articles in %s?" , rows.length);
		} else {
			str = ngettext("Delete %d selected article?", "Delete %d selected articles?", rows.length);
		}

		str = str.replace("%d", rows.length);
		str = str.replace("%s", fn);

		if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
			return;
		}

		query = "?op=rpc&method=delete&ids=" + param_escape(rows);

		console.log(query);

		new Ajax.Request("backend.php",	{
			parameters: query,
			onComplete: function(transport) {
					handle_rpc_json(transport);
					viewCurrentFeed();
				} });

	} catch (e) {
		exception_error("deleteSelection", e);
	}
}

function archiveSelection() {

	try {

		var rows = getSelectedArticleIds2();

		if (rows.length == 0) {
			alert(__("No articles are selected."));
			return;
		}

		var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());
		var str;
		var op;

		if (getActiveFeedId() != 0) {
			str = ngettext("Archive %d selected article in %s?", "Archive %d selected articles in %s?", rows.length);
			op = "archive";
		} else {
			str = ngettext("Move %d archived article back?", "Move %d archived articles back?", rows.length);

			str += " " + __("Please note that unstarred articles might get purged on next feed update.");

			op = "unarchive";
		}

		str = str.replace("%d", rows.length);
		str = str.replace("%s", fn);

		if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
			return;
		}

		query = "?op=rpc&method="+op+"&ids=" + param_escape(rows);

		console.log(query);

		for (var i = 0; i < rows.length; i++) {
			cache_delete("article:" + rows[i]);
		}

		new Ajax.Request("backend.php", {
			parameters: query,
			onComplete: function(transport) {
					handle_rpc_json(transport);
					viewCurrentFeed();
				} });

	} catch (e) {
		exception_error("archiveSelection", e);
	}
}

function catchupSelection() {

	try {

		var rows = getSelectedArticleIds2();

		if (rows.length == 0) {
			alert(__("No articles are selected."));
			return;
		}

		var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());

		var str = ngettext("Mark %d selected article in %s as read?", "Mark %d selected articles in %s as read?", rows.length);

		str = str.replace("%d", rows.length);
		str = str.replace("%s", fn);

		if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
			return;
		}

		selectionToggleUnread(false, 'viewCurrentFeed()', true);

	} catch (e) {
		exception_error("catchupSelection", e);
	}
}

function editArticleTags(id) {
		var query = "backend.php?op=article&method=editArticleTags&param=" + param_escape(id);

		if (dijit.byId("editTagsDlg"))
			dijit.byId("editTagsDlg").destroyRecursive();

		dialog = new dijit.Dialog({
			id: "editTagsDlg",
			title: __("Edit article Tags"),
			style: "width: 600px",
			execute: function() {
				if (this.validate()) {
					var query = dojo.objectToQuery(this.attr('value'));

					notify_progress("Saving article tags...", true);

					new Ajax.Request("backend.php",	{
					parameters: query,
					onComplete: function(transport) {
						try {
							notify('');
							dialog.hide();

							var data = JSON.parse(transport.responseText);

							if (data) {
								var id = data.id;

								console.log(id);

								var tags = $("ATSTR-" + id);
								var tooltip = dijit.byId("ATSTRTIP-" + id);

								if (tags) tags.innerHTML = data.content;
								if (tooltip) tooltip.attr('label', data.content_full);
							}
						} catch (e) {
							exception_error("editArticleTags/inner", e);
						}

					}});
				}
			},
			href: query
		});

		var tmph = dojo.connect(dialog, 'onLoad', function() {
	   		dojo.disconnect(tmph);

			new Ajax.Autocompleter('tags_str', 'tags_choices',
			   "backend.php?op=article&method=completeTags",
			   { tokens: ',', paramName: "search" });
		});

		dialog.show();

}

function cdmScrollToArticleId(id, force) {
	try {
		var ctr = $("headlines-frame");
		var e = $("RROW-" + id);

		if (!e || !ctr) return;

		if (force || e.offsetTop+e.offsetHeight > (ctr.scrollTop+ctr.offsetHeight) ||
				e.offsetTop < ctr.scrollTop) {

			// expanded cdm has a 4px margin now
			ctr.scrollTop = parseInt(e.offsetTop) - 4;
		}

	} catch (e) {
		exception_error("cdmScrollToArticleId", e);
	}
}

function setActiveArticleId(id) {
	console.log("setActiveArticleId:" + id);

	_active_article_id = id;
	PluginHost.run(PluginHost.HOOK_ARTICLE_SET_ACTIVE, _active_article_id);
}

function getActiveArticleId() {
	return _active_article_id;
}

function postMouseIn(e, id) {
	post_under_pointer = id;
}

function postMouseOut(id) {
	post_under_pointer = false;
}

function unpackVisibleHeadlines() {
	try {
		if (!isCdmMode() || !getInitParam("cdm_expanded")) return;

		$$("#headlines-frame span.cencw[id]").each(
			function(child) {
				var row = $("RROW-" + child.id.replace("CENCW-", ""));

				if (row && row.offsetTop <= $("headlines-frame").scrollTop +
					$("headlines-frame").offsetHeight) {

					//console.log("unpacking: " + child.id);

					child.innerHTML = htmlspecialchars_decode(child.innerHTML);
					child.removeAttribute('id');

					PluginHost.run(PluginHost.HOOK_ARTICLE_RENDERED_CDM, row);

					Element.show(child);
				}
			}
		);

	} catch (e) {
		exception_error("unpackVisibleHeadlines", e);
	}
}

function headlines_scroll_handler(e) {
	try {

		// rate-limit in case of smooth scrolling and similar abominations
		if (Math.max(e.scrollTop, _headlines_scroll_offset) - Math.min(e.scrollTop, _headlines_scroll_offset) < 25) {
			return;
		}

		_headlines_scroll_offset = e.scrollTop;

		var hsp = $("headlines-spacer");

		unpackVisibleHeadlines();

		// set topmost child in the buffer as active
		if (isCdmMode() && getInitParam("cdm_auto_catchup") == 1 &&
				getSelectedArticleIds2().length <= 1 &&
				getInitParam("cdm_expanded")) {

			var rows = $$("#headlines-frame > div[id*=RROW]");

			for (var i = 0; i < rows.length; i++) {
				var child = rows[i];

				if ($("headlines-frame").scrollTop <= child.offsetTop &&
					child.offsetTop - $("headlines-frame").scrollTop < 100 &&
					child.getAttribute("data-article-id") != _active_article_id) {

					if (_active_article_id) {
						var row = $("RROW-" + _active_article_id);
						if (row) row.removeClassName("active");
					}

					_active_article_id = child.getAttribute("data-article-id");
					showArticleInHeadlines(_active_article_id, true);
					updateSelectedPrompt();
					break;
				}
			}
		}

		if (!_infscroll_disable) {
			if (hsp && hsp.offsetTop - 250 <= e.scrollTop + e.offsetHeight) {

				hsp.innerHTML = "<span class='loading'><img src='images/indicator_tiny.gif'> " +
					__("Loading, please wait...") + "</span>";

				loadMoreHeadlines();
				return;

			}
		}

		if (isCdmMode()) {
			updateFloatingTitle();
		}

		catchupCurrentBatchIfNeeded();

		if (getInitParam("cdm_auto_catchup") == 1) {

			// let's get DOM some time to settle down
			var ts = new Date().getTime();
			if (ts - _last_headlines_update < 100) return;

			$$("#headlines-frame > div[id*=RROW][class*=Unread]").each(
				function(child) {
					if (child.hasClassName("Unread") && $("headlines-frame").scrollTop >
							(child.offsetTop + child.offsetHeight/2)) {

						var id = child.getAttribute("data-article-id")

						if (catchup_id_batch.indexOf(id) == -1)
							catchup_id_batch.push(id);

						//console.log("auto_catchup_batch: " + catchup_id_batch.toString());
					}

				});

			if (_infscroll_disable) {
				var child = $$("#headlines-frame div[id*=RROW]").last();

				if (child && $("headlines-frame").scrollTop >
						(child.offsetTop + child.offsetHeight - 50)) {

					console.log("we seem to be at an end");

					if (getInitParam("on_catchup_show_next_feed") == "1") {
						openNextUnreadFeed();
					}
				}
			}
		}

	} catch (e) {
		console.warn("headlines_scroll_handler: " + e);
	}
}

function openNextUnreadFeed() {
	try {
		var is_cat = activeFeedIsCat();
		var nuf = getNextUnreadFeed(getActiveFeedId(), is_cat);
		if (nuf) viewfeed({feed: nuf, is_cat: is_cat});
	} catch (e) {
		exception_error("openNextUnreadFeed", e);
	}
}

function catchupBatchedArticles() {
	try {
		if (catchup_id_batch.length > 0 && !_infscroll_request_sent && !_catchup_request_sent) {

			console.log("catchupBatchedArticles: working");

			// make a copy of the array
			var batch = catchup_id_batch.slice();
			var query = "?op=rpc&method=catchupSelected" +
				"&cmode=0&ids=" + param_escape(batch.toString());

			console.log(query);

			_catchup_request_sent = true;

			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					handle_rpc_json(transport);

					_catchup_request_sent = false;

					reply = JSON.parse(transport.responseText);
					var batch = reply.ids;

					batch.each(function(id) {
						console.log(id);
						var elem = $("RROW-" + id);
						if (elem) elem.removeClassName("Unread");
						catchup_id_batch.remove(id);
					});

					updateFloatingTitle(true);

				} });
		}

	} catch (e) {
		exception_error("catchupBatchedArticles", e);
	}
}

function catchupRelativeToArticle(below, id) {

	try {

		if (!id) id = getActiveArticleId();

		if (!id) {
			alert(__("No article is selected."));
			return;
		}

		var visible_ids = getLoadedArticleIds();

		var ids_to_mark = new Array();

		if (!below) {
			for (var i = 0; i < visible_ids.length; i++) {
				if (visible_ids[i] != id) {
					var e = $("RROW-" + visible_ids[i]);

					if (e && e.hasClassName("Unread")) {
						ids_to_mark.push(visible_ids[i]);
					}
				} else {
					break;
				}
			}
		} else {
			for (var i = visible_ids.length-1; i >= 0; i--) {
				if (visible_ids[i] != id) {
					var e = $("RROW-" + visible_ids[i]);

					if (e && e.hasClassName("Unread")) {
						ids_to_mark.push(visible_ids[i]);
					}
				} else {
					break;
				}
			}
		}

		if (ids_to_mark.length == 0) {
			alert(__("No articles found to mark"));
		} else {
			var msg = ngettext("Mark %d article as read?", "Mark %d articles as read?", ids_to_mark.length).replace("%d", ids_to_mark.length);

			if (getInitParam("confirm_feed_catchup") != 1 || confirm(msg)) {

				for (var i = 0; i < ids_to_mark.length; i++) {
					var e = $("RROW-" + ids_to_mark[i]);
					e.removeClassName("Unread");
				}

				var query = "?op=rpc&method=catchupSelected" +
					"&cmode=0" + "&ids=" + param_escape(ids_to_mark.toString());

				new Ajax.Request("backend.php", {
					parameters: query,
					onComplete: function(transport) {
						handle_rpc_json(transport);
					} });

			}
		}

	} catch (e) {
		exception_error("catchupRelativeToArticle", e);
	}
}

function cdmCollapseArticle(event, id, unmark) {
	try {
		if (unmark == undefined) unmark = true;

		var row = $("RROW-" + id);
		var elem = $("CICD-" + id);

		if (elem && row) {
			var collapse = row.select("span[class='collapseBtn']")[0];

		  	Element.hide(elem);
			Element.show("CEXC-" + id);
			Element.hide(collapse);

			if (unmark) {
				row.removeClassName("active");

				markHeadline(id, false);

				if (id == getActiveArticleId()) {
					setActiveArticleId(0);
				}

				updateSelectedPrompt();
			}

			if (event) Event.stop(event);

			PluginHost.run(PluginHost.HOOK_ARTICLE_COLLAPSED, id);

			if (row.offsetTop < $("headlines-frame").scrollTop)
				scrollToRowId(row.id);

			$("floatingTitle").style.visibility = "hidden";
			$("floatingTitle").setAttribute("data-article-id", 0);
		}

	} catch (e) {
		exception_error("cdmCollapseArticle", e);
	}
}

function cdmExpandArticle(id, noexpand) {
	try {
		console.log("cdmExpandArticle " + id);

		var row = $("RROW-" + id);

		if (!row) return false;

		var oldrow = $("RROW-" + getActiveArticleId());

		var elem = $("CICD-" + getActiveArticleId());

		if (id == getActiveArticleId() && Element.visible(elem))
			return true;

		selectArticles("none");

		var old_offset = row.offsetTop;

		if (getActiveArticleId() && elem && !getInitParam("cdm_expanded")) {
			var collapse = oldrow.select("span[class='collapseBtn']")[0];

		  	Element.hide(elem);
			Element.show("CEXC-" + getActiveArticleId());
			Element.hide(collapse);
		}

		if (oldrow) oldrow.removeClassName("active");

		setActiveArticleId(id);

		elem = $("CICD-" + id);

		var collapse = row.select("span[class='collapseBtn']")[0];

		var cencw = $("CENCW-" + id);

		if (!Element.visible(elem) && !noexpand) {
			if (cencw) {
				cencw.innerHTML = htmlspecialchars_decode(cencw.innerHTML);
				cencw.setAttribute('id', '');
				Element.show(cencw);
			}

			Element.show(elem);
			Element.hide("CEXC-" + id);
			Element.show(collapse);
		}

		var new_offset = row.offsetTop;

		if (old_offset > new_offset)
			$("headlines-frame").scrollTop -= (old_offset-new_offset);

		if (!noexpand) {
			if (catchup_id_batch.indexOf(id) == -1)
				catchup_id_batch.push(id);

			catchupCurrentBatchIfNeeded();
		}

		toggleSelected(id);
		row.addClassName("active");

		PluginHost.run(PluginHost.HOOK_ARTICLE_EXPANDED, id);

	} catch (e) {
		exception_error("cdmExpandArticle", e);
	}

	return false;
}

function getArticleUnderPointer() {
	return post_under_pointer;
}

function scrollArticle(offset) {
	try {
		if (!isCdmMode()) {
			var ci = $("content-insert");
			if (ci) {
				ci.scrollTop += offset;
			}
		} else {
			var hi = $("headlines-frame");
			if (hi) {
				hi.scrollTop += offset;
			}

		}
	} catch (e) {
		exception_error("scrollArticle", e);
	}
}

function show_labels_in_headlines(transport) {
	try {
		var data = JSON.parse(transport.responseText);

		if (data) {
			data['info-for-headlines'].each(function(elem) {
				$$(".HLLCTR-" + elem.id).each(function(ctr) {
					ctr.innerHTML = elem.labels;
				});
			});
		}
	} catch (e) {
		exception_error("show_labels_in_headlines", e);
	}
}

function cdmClicked(event, id) {
	try {
		//var shift_key = event.shiftKey;

		if (!event.ctrlKey && !event.metaKey) {

			if (!getInitParam("cdm_expanded")) {
				return cdmExpandArticle(id);
			} else {

				var elem = $("RROW-" + getActiveArticleId());

				if (elem) elem.removeClassName("active");

				selectArticles("none");
				toggleSelected(id);

				var elem = $("RROW-" + id);
				var article_is_unread = elem.hasClassName("Unread");

				elem.removeClassName("Unread");
				elem.addClassName("active");

				setActiveArticleId(id);

				if (article_is_unread) {
					decrementFeedCounter(getActiveFeedId(), activeFeedIsCat());
					updateFloatingTitle(true);
				}

				var query = "?op=rpc&method=catchupSelected" +
					"&cmode=0&ids=" + param_escape(id);

				new Ajax.Request("backend.php", {
					parameters: query,
					onComplete: function(transport) {
						handle_rpc_json(transport);
					} });

				return !event.shiftKey;
			}

		} else if (event.target.parents(".cdmHeader").length > 0) {

			toggleSelected(id, true);

			var elem = $("RROW-" + id);
			var article_is_unread = elem.hasClassName("Unread");

			if (article_is_unread) {
				decrementFeedCounter(getActiveFeedId(), activeFeedIsCat());
			}

			toggleUnread(id, 0, false);

			openArticleInNewWindow(id);
		}

		var unread_in_buffer = $$("#headlines-frame > div[id*=RROW][class*=Unread]").length
		request_counters(unread_in_buffer == 0);

	} catch (e) {
		exception_error("cdmClicked");
	}

	return false;
}

function hlClicked(event, id) {
	try {
		if (event.which == 2) {
			view(id);
			return true;
		} else if (event.ctrlKey || event.metaKey) {
			toggleSelected(id, true);
			toggleUnread(id, 0, false);
			openArticleInNewWindow(id);
			return false;
		} else {
			view(id);
			return false;
		}

	} catch (e) {
		exception_error("hlClicked");
	}
}

function openArticleInNewWindow(id) {
	toggleUnread(id, 0, false);

	var w = window.open("");
	w.opener = null;
	w.location = "backend.php?op=article&method=redirect&id=" + id;
}

function isCdmMode() {
	return getInitParam("combined_display_mode");
}

function markHeadline(id, marked) {
	if (marked == undefined) marked = true;

	var row = $("RROW-" + id);
	if (row) {
		var check = dijit.getEnclosingWidget(
				row.getElementsByClassName("rchk")[0]);

		if (check) {
			check.attr("checked", marked);
		}

		if (marked)
			row.addClassName("Selected");
		else
			row.removeClassName("Selected");
	}
}

function getRelativePostIds(id, limit) {

	var tmp = [];

	try {

		if (!limit) limit = 6; //3

		var ids = getLoadedArticleIds();

		for (var i = 0; i < ids.length; i++) {
			if (ids[i] == id) {
				for (var k = 1; k <= limit; k++) {
					//if (i > k-1) tmp.push(ids[i-k]);
					if (i < ids.length-k) tmp.push(ids[i+k]);
				}
				break;
			}
		}

	} catch (e) {
		exception_error("getRelativePostIds", e);
	}

	return tmp;
}

function correctHeadlinesOffset(id) {

	try {

		var container = $("headlines-frame");
		var row = $("RROW-" + id);

		if (!container || !row) return;

		var viewport = container.offsetHeight;

		var rel_offset_top = row.offsetTop - container.scrollTop;
		var rel_offset_bottom = row.offsetTop + row.offsetHeight - container.scrollTop;

		//console.log("Rtop: " + rel_offset_top + " Rbtm: " + rel_offset_bottom);
		//console.log("Vport: " + viewport);

		if (rel_offset_top <= 0 || rel_offset_top > viewport) {
			container.scrollTop = row.offsetTop;
		} else if (rel_offset_bottom > viewport) {

			/* doesn't properly work with Opera in some cases because
				Opera fucks up element scrolling */

			container.scrollTop = row.offsetTop + row.offsetHeight - viewport;
		}

	} catch (e) {
		exception_error("correctHeadlinesOffset", e);
	}

}

function headlineActionsChange(elem) {
	try {
		eval(elem.value);
		elem.attr('value', 'false');
	} catch (e) {
		exception_error("headlineActionsChange", e);
	}
}

function closeArticlePanel() {

	if (dijit.byId("content-insert"))
		dijit.byId("headlines-wrap-inner").removeChild(
			dijit.byId("content-insert"));
}

function initFloatingMenu() {
	try {
		if (!dijit.byId("floatingMenu")) {

			var menu = new dijit.Menu({
				id: "floatingMenu",
				targetNodeIds: ["floatingTitle"]
			});

			headlinesMenuCommon(menu);

			menu.startup();
		}

	} catch (e) {
		exception_error("initFloatingMenu", e);
	}
}

function headlinesMenuCommon(menu) {
	try {

		menu.addChild(new dijit.MenuItem({
			label: __("Open original article"),
			onClick: function(event) {
				openArticleInNewWindow(this.getParent().currentTarget.getAttribute("data-article-id"));
			}}));

		menu.addChild(new dijit.MenuItem({
			label: __("Display article URL"),
			onClick: function(event) {
				displayArticleUrl(this.getParent().currentTarget.getAttribute("data-article-id"));
			}}));

		menu.addChild(new dijit.MenuSeparator());

		menu.addChild(new dijit.MenuItem({
			label: __("Toggle unread"),
			onClick: function(event) {

				var ids = getSelectedArticleIds2();
				// cast to string
				var id = (this.getParent().currentTarget.getAttribute("data-article-id")) + "";
				ids = ids.size() != 0 && ids.indexOf(id) != -1 ? ids : [id];

				selectionToggleUnread(undefined, false, true, ids);
				}}));

		menu.addChild(new dijit.MenuItem({
			label: __("Toggle starred"),
			onClick: function(event) {
				var ids = getSelectedArticleIds2();
				// cast to string
				var id = (this.getParent().currentTarget.getAttribute("data-article-id")) + "";
				ids = ids.size() != 0 && ids.indexOf(id) != -1 ? ids : [id];

				selectionToggleMarked(undefined, false, true, ids);
				}}));

		menu.addChild(new dijit.MenuItem({
			label: __("Toggle published"),
			onClick: function(event) {
				var ids = getSelectedArticleIds2();
				// cast to string
				var id = (this.getParent().currentTarget.getAttribute("data-article-id")) + "";
				ids = ids.size() != 0 && ids.indexOf(id) != -1 ? ids : [id];

				selectionTogglePublished(undefined, false, true, ids);
				}}));

		menu.addChild(new dijit.MenuSeparator());

		menu.addChild(new dijit.MenuItem({
			label: __("Mark above as read"),
			onClick: function(event) {
				catchupRelativeToArticle(0, this.getParent().currentTarget.getAttribute("data-article-id"));
				}}));

		menu.addChild(new dijit.MenuItem({
			label: __("Mark below as read"),
			onClick: function(event) {
				catchupRelativeToArticle(1, this.getParent().currentTarget.getAttribute("data-article-id"));
				}}));


		var labels = dijit.byId("feedTree").model.getItemsInCategory(-2);

		if (labels) {

			menu.addChild(new dijit.MenuSeparator());

			var labelAddMenu = new dijit.Menu({ownerMenu: menu});
			var labelDelMenu = new dijit.Menu({ownerMenu: menu});

			labels.each(function(label) {
				var id = label.id[0];
				var bare_id = id.substr(id.indexOf(":")+1);
				var name = label.name[0];

				bare_id = feed_to_label_id(bare_id);

				labelAddMenu.addChild(new dijit.MenuItem({
					label: name,
					labelId: bare_id,
					onClick: function(event) {

						var ids = getSelectedArticleIds2();
						// cast to string
						var id = (this.getParent().ownerMenu.currentTarget.getAttribute("data-article-id")) + "";

						ids = ids.size() != 0 && ids.indexOf(id) != -1 ? ids : [id];

						selectionAssignLabel(this.labelId, ids);
				}}));

				labelDelMenu.addChild(new dijit.MenuItem({
					label: name,
					labelId: bare_id,
					onClick: function(event) {
						var ids = getSelectedArticleIds2();
						// cast to string
						var id = (this.getParent().ownerMenu.currentTarget.getAttribute("data-article-id")) + "";

						ids = ids.size() != 0 && ids.indexOf(id) != -1 ? ids : [id];

						selectionRemoveLabel(this.labelId, ids);
				}}));

			});

			menu.addChild(new dijit.PopupMenuItem({
				label: __("Assign label"),
				popup: labelAddMenu
			}));

			menu.addChild(new dijit.PopupMenuItem({
				label: __("Remove label"),
				popup: labelDelMenu
			}));

		}


	} catch (e) {
		exception_error("headlinesMenuCommon", e);
	}
}

function initHeadlinesMenu() {
	try {
		if (!dijit.byId("headlinesMenu")) {

			var menu = new dijit.Menu({
				id: "headlinesMenu",
				targetNodeIds: ["headlines-frame"],
				selector: ".hlMenuAttach"
			});

			headlinesMenuCommon(menu);

			menu.startup();
		}

		/* vgroup feed title menu */

		if (!dijit.byId("headlinesFeedTitleMenu")) {

			var menu = new dijit.Menu({
				id: "headlinesFeedTitleMenu",
				targetNodeIds: ["headlines-frame"],
				selector: "div.cdmFeedTitle"
			});

			menu.addChild(new dijit.MenuItem({
				label: __("Select articles in group"),
				onClick: function (event) {
					selectArticles("all",
						"#headlines-frame > div[id*=RROW]" +
						"[data-orig-feed-id='" + this.getParent().currentTarget.getAttribute("data-feed-id") + "']");

				}
			}));

			menu.addChild(new dijit.MenuItem({
				label: __("Mark group as read"),
				onClick: function (event) {
					selectArticles("none");
					selectArticles("all",
						"#headlines-frame > div[id*=RROW]" +
						"[data-orig-feed-id='" + this.getParent().currentTarget.getAttribute("data-feed-id") + "']");

					catchupSelection();
				}
			}));

			menu.addChild(new dijit.MenuItem({
				label: __("Mark feed as read"),
				onClick: function (event) {
					catchupFeedInGroup(this.getParent().currentTarget.getAttribute("data-feed-id"));
				}
			}));

			menu.addChild(new dijit.MenuItem({
				label: __("Edit feed"),
				onClick: function (event) {
					editFeed(this.getParent().currentTarget.getAttribute("data-feed-id"));
				}
			}));

			menu.startup();
		}

	} catch (e) {
		exception_error("initHeadlinesMenu", e);
	}
}

function cache_set(id, obj) {
	//console.log("cache_set: " + id);
	if (has_storage)
		try {
			sessionStorage[id] = obj;
		} catch (e) {
			sessionStorage.clear();
		}
}

function cache_get(id) {
	if (has_storage)
		return sessionStorage[id];
}

function cache_clear() {
	if (has_storage)
		sessionStorage.clear();
}

function cache_delete(id) {
	if (has_storage)
		sessionStorage.removeItem(id);
}

function cancelSearch() {
	try {
		_search_query = "";
		viewCurrentFeed();
	} catch (e) {
		exception_error("cancelSearch", e);
	}
}

function setSelectionScore() {
	try {
		var ids = getSelectedArticleIds2();

		if (ids.length > 0) {
			console.log(ids);

			var score = prompt(__("Please enter new score for selected articles:"), score);

			if (score != undefined) {
				var query = "op=article&method=setScore&id=" + param_escape(ids.toString()) +
					"&score=" + param_escape(score);

				new Ajax.Request("backend.php", {
					parameters: query,
					onComplete: function(transport) {
						var reply = JSON.parse(transport.responseText);
						if (reply) {
							console.log(ids);

							ids.each(function(id) {
								var row = $("RROW-" + id);

								if (row) {
									var pic = row.getElementsByClassName("hlScorePic")[0];

									if (pic) {
										pic.src = pic.src.replace(/score_.*?\.png/,
											reply["score_pic"]);
										pic.setAttribute("score", score);
									}
								}
							});
						}
					} });
			}

		} else {
			alert(__("No articles are selected."));
		}
	} catch (e) {
		exception_error("setSelectionScore", e);
	}
}

function updateScore(id) {
	try {
		var pic = $$("#RROW-" + id + " .hlScorePic")[0];

		if (pic) {

			var query = "op=article&method=getScore&id=" + param_escape(id);

			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					console.log(transport.responseText);

					var reply = JSON.parse(transport.responseText);

					if (reply) {
						pic.src = pic.src.replace(/score_.*?\.png/, reply["score_pic"]);
						pic.setAttribute("score", reply["score"]);
						pic.setAttribute("title", reply["score"]);
					}
				} });
		}

	} catch (e) {
		exception_error("updateScore", e);
	}
}

function changeScore(id, pic) {
	try {
		var score = pic.getAttribute("score");

		var new_score = prompt(__("Please enter new score for this article:"), score);

		if (new_score != undefined) {

			var query = "op=article&method=setScore&id=" + param_escape(id) +
				"&score=" + param_escape(new_score);

			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					var reply = JSON.parse(transport.responseText);

					if (reply) {
						pic.src = pic.src.replace(/score_.*?\.png/, reply["score_pic"]);
						pic.setAttribute("score", new_score);
						pic.setAttribute("title", new_score);
					}
				} });
		}
	} catch (e) {
		exception_error("changeScore", e);
	}
}

function displayArticleUrl(id) {
	try {
		var query = "op=rpc&method=getlinktitlebyid&id=" + param_escape(id);

			new Ajax.Request("backend.php", {
				parameters: query,
				onComplete: function(transport) {
					var reply = JSON.parse(transport.responseText);

					if (reply && reply.link) {
						prompt(__("Article URL:"), reply.link);
					}
				} });
	} catch (e) {
		exception_error("changeScore", e);
	}
}

function scrollToRowId(id) {
	try {
		var row = $(id);

		if (row)
			$("headlines-frame").scrollTop = row.offsetTop - 4;

	} catch (e) {
		exception_error("scrollToRowId", e);
	}
}

function updateFloatingTitle(unread_only) {
	try {
		if (!isCdmMode()) return;

		var hf = $("headlines-frame");

		var elems = $$("#headlines-frame > div[id*=RROW]");

		for (var i = 0; i < elems.length; i++) {

			var child = elems[i];

			if (child && child.offsetTop + child.offsetHeight > hf.scrollTop) {

				var header = child.getElementsByClassName("cdmHeader")[0];

				if (unread_only || child.getAttribute("data-article-id") != $("floatingTitle").getAttribute("data-article-id")) {
					if (child.getAttribute("data-article-id") != $("floatingTitle").getAttribute("data-article-id")) {

						$("floatingTitle").setAttribute("data-article-id", child.getAttribute("data-article-id"));
						$("floatingTitle").innerHTML = header.innerHTML;
						$("floatingTitle").firstChild.innerHTML = "<img class='anchor markedPic' src='images/page_white_go.png' onclick=\"scrollToRowId('"+child.id+"')\">" + $("floatingTitle").firstChild.innerHTML;

						initFloatingMenu();

						var cb = $$("#floatingTitle .dijitCheckBox")[0];

						if (cb)
							cb.parentNode.removeChild(cb);
					}

					if (child.hasClassName("Unread"))
						$("floatingTitle").addClassName("Unread");
					else
						$("floatingTitle").removeClassName("Unread");

					PluginHost.run(PluginHost.HOOK_FLOATING_TITLE, child);
				}

				$("floatingTitle").style.marginRight = hf.offsetWidth - child.offsetWidth + "px";
				if (header.offsetTop + header.offsetHeight < hf.scrollTop + $("floatingTitle").offsetHeight - 5 &&
				    child.offsetTop + child.offsetHeight >= hf.scrollTop + $("floatingTitle").offsetHeight - 5)
					$("floatingTitle").style.visibility = "visible";
				else
					$("floatingTitle").style.visibility = "hidden";

				return;

			}
		}

	} catch (e) {
		exception_error("updateFloatingTitle", e);
	}
}

function catchupCurrentBatchIfNeeded() {
	if (catchup_id_batch.length > 0) {
		window.clearTimeout(catchup_timeout_id);
		catchup_timeout_id = window.setTimeout(catchupBatchedArticles, 1000);

		if (catchup_id_batch.length >= 10) {
			catchupBatchedArticles();
		}
	}
}

function cdmFooterClick(event) {
	event.stopPropagation();
}