webui: make it possible to map selected services

I probably need to improve the text on the button.

src/webui/static/app/chconf.js

@@ -21,7 +21,7 @@ tvheadend.comet.on('channeltags', function(m) {
 /*
  * Service mapping
  */
-tvheadend.mapServices = function()
+tvheadend.mapServices = function(t, e, store, select)
 {
   var panel = null;
   var win   = null;
@@ -63,11 +63,22 @@ tvheadend.mapServices = function()
     text    : 'Map',
     tooltip : 'Begin mapping',
     handler : function () {
+      p = null;
+      if (select) {
+        var r = select.getSelections();
+        if (r.length > 0) {
+          var uuids = [];
+          for (var i = 0; i < r.length; i++)
+            uuids.push(r[i].id);
+          p = { uuids: Ext.encode(uuids) };
+        }
+      }
       panel.getForm().submit({
         url         : 'api/service/mapper/start',
-        waitMessage : 'Mapping services...'
+        waitMessage : 'Mapping services...',
+        params      : p
       });
-    } 
+    }
   });
 
   panel = new Ext.FormPanel({

src/webui/static/app/idnode.js

@@ -748,8 +748,14 @@ tvheadend.idnode_grid = function(panel, conf)
     /* Extra buttons */
     if (conf.tbar) {
       buttons.push('-')
-      for (i = 0; i < conf.tbar.length; i++)
+      for (i = 0; i < conf.tbar.length; i++) {
+        if (conf.tbar[i].callback) {
+          conf.tbar[i].handler = function (b, e) {
+            this.callback(this, e, store, select);
+          }
+        }
         buttons.push(conf.tbar[i])
+      }
     }
 
     /* Help */

src/webui/static/app/mpegts.js

@@ -85,6 +85,13 @@ tvheadend.muxes = function(panel)
 
 tvheadend.services = function(panel)
 {
+  var mapButton = new Ext.Toolbar.Button({
+    tooltip : 'Map services to channels',
+    iconCls : '',
+    text    : 'Map Services',
+    callback: tvheadend.mapServices,
+    disabled : false,
+  });
   tvheadend.idnode_grid(panel, {
     url     : 'api/mpegts/service',
     comet   : 'service',
@@ -92,6 +99,7 @@ tvheadend.services = function(panel)
     titleP  : 'Services',
     add     : false,
     del     : false,
+    tbar    : [ mapButton ],
     lcol    : [
       {
         header   : 'Play',