From 03d8e930c253643395e0718c452a29b381f90d4c Mon Sep 17 00:00:00 2001
From: Jan Schneider <jan@horde.org>
Date: Fri, 13 Feb 2009 17:29:41 +0100
Subject: [PATCH] Add ajax endpoint, js frontend, and basic ListEvents method.

---
 kronolith/js/src/kronolith.js | 91 ++++++++++++++++++++++++++++++++++++++++++-
 kronolith/lib/Kronolith.php   |  2 +
 2 files changed, 91 insertions(+), 2 deletions(-)

diff --git a/kronolith/js/src/kronolith.js b/kronolith/js/src/kronolith.js
index 0e6cd59ae..e6823de96 100644
--- a/kronolith/js/src/kronolith.js
+++ b/kronolith/js/src/kronolith.js
@@ -16,12 +16,20 @@ var frames = { horde_main: true },
 /* Kronolith object. */
 KronolithCore = {
     // Vars used and defaulting to null/false:
-    //  eventForm
+    //   DMenu, alertrequest, inAjaxCallback, is_logout, onDoActionComplete,
+    //   window_load, eventForm
 
     view: '',
     remove_gc: [],
     date: new Date(),
 
+    doActionOpts: {
+        onException: function(r, e) { KronolitCore.debug('onException', e); },
+        onFailure: function(t, o) { KronolithCore.debug('onFailure', t); },
+        evalJS: false,
+        evalJSON: true
+    },
+
     debug: function(label, e)
     {
         if (!this.is_logout && Kronolith.conf.debug) {
@@ -29,6 +37,70 @@ KronolithCore = {
         }
     },
 
+    /* 'action' -> if action begins with a '*', the exact string will be used
+     *  instead of sending the action to the ajax handler. */
+    doAction: function(action, params, callback, opts)
+    {
+        var b, tmp = {};
+
+        opts = Object.extend(this.doActionOpts, opts || {});
+        params = $H(params);
+        action = action.startsWith('*')
+            ? action.substring(1)
+            : Kronolith.conf.URI_AJAX + '/' + action;
+        if (Kronolith.conf.SESSION_ID) {
+            params.update(Kronolith.conf.SESSION_ID.toQueryParams());
+        }
+        opts.parameters = params.toQueryString();
+        opts.onComplete = function(t, o) { this.doActionComplete(t, callback); }.bind(this);
+        new Ajax.Request(action, opts);
+    },
+
+    doActionComplete: function(request, callback)
+    {
+        this.inAjaxCallback = true;
+        var r;
+
+        if (!request.responseJSON) {
+            if (++this.server_error == 3) {
+                this.showNotifications([ { type: 'horde.error', message: Kronolith.text.ajax_timeout } ]);
+            }
+            this.inAjaxCallback = false;
+            return;
+        }
+
+        r = request.responseJSON;
+
+        if (!r.msgs) {
+            r.msgs = [];
+        }
+
+        if (r.response && Object.isFunction(callback)) {
+            if (Kronolith.conf.debug) {
+                callback(r);
+            } else {
+                try {
+                    callback(r);
+                } catch (e) {}
+            }
+        }
+
+        if (this.server_error >= 3) {
+            r.msgs.push({ type: 'horde.success', message: Kronolith.text.ajax_recover });
+        }
+        this.server_error = 0;
+
+        if (!r.msgs_noauto) {
+            this.showNotifications(r.msgs);
+        }
+
+        if (this.onDoActionComplete) {
+            this.onDoActionComplete(r);
+        }
+
+        this.inAjaxCallback = false;
+    },
+
     setTitle: function(title)
     {
         document.title = Kronolith.conf.name + ' :: ' + title;
@@ -315,12 +387,14 @@ KronolithCore = {
         case 'month':
             var body = $('kronolithViewMonth').down('.kronolithViewBody'),
                 day = date.clone(), monthEnd = date.clone(),
-                cell, monday;
+                cell, monday, firstDay, lastDay;
 
             // Calculate first and last days being displayed.
             day.setDate(1);
+            firstDay = day.clone()
             this.moveToBeginOfWeek(day);
             monthEnd.moveToLastDayOfMonth();
+            lastDay = monthEnd.clone();
             this.moveToBeginOfWeek(monthEnd);
 
             // Remove old rows. Maybe we should only rebuild the calendars if
@@ -332,6 +406,10 @@ KronolithCore = {
                 var row = body.insert(this.createWeekRow(day, date.getMonth()).show());
                 day.next().week();
             }
+
+            // Load events.
+            this.doAction('ListEvents', { start: firstDay.toJSON(), end: lastDay.toJSON() }, this._monthCallback.bind(this));
+
             break;
         }
     },
@@ -428,6 +506,15 @@ KronolithCore = {
     },
 
     /**
+     * Callback method for inserting events in the month view.
+     *
+     * @param object r  The returned object.
+     */
+    _monthCallback: function(r)
+    {
+    },
+
+    /**
      * Parses a date attribute string into a Date object.
      *
      * For other strings use Date.parse().
diff --git a/kronolith/lib/Kronolith.php b/kronolith/lib/Kronolith.php
index 1ca778ca6..63d75aa32 100644
--- a/kronolith/lib/Kronolith.php
+++ b/kronolith/lib/Kronolith.php
@@ -132,6 +132,8 @@ class Kronolith {
 
         /* Gettext strings used in core javascript files. */
         $code['text'] = array_map('addslashes', array(
+            'ajax_timeout' => _("There has been no contact with the remote server for several minutes. The server may be temporarily unavailable or network problems may be interrupting your session. You will not see any updates until the connection is restored."),
+            'ajax_recover' => _("The connection to the remote server has been restored."),
         ));
         for ($i = 1; $i <= 12; ++$i) {
             $code['text']['month'][$i - 1] = NLS::getLangInfo(constant('MON_' . $i));
-- 
2.11.0