[ADD] display unhelpful message when a list view search yields no result

bzr revid: xmo@openerp.com-20120403141553-hrv006vdkv70zyfu

addons/web/static/src/css/base.css

@@ -344,3 +344,12 @@
   -webkit-box-shadow: none;
   -box-shadow: none;
 }
+.openerp2 .oe-listview .oe_listview_nocontent > img {
+  float: left;
+  margin-right: 1.5em;
+}
+.openerp2 .oe-listview .oe_listview_nocontent > div {
+  overflow: hidden;
+  font-size: 150%;
+  width: 60ex;
+}

addons/web/static/src/css/base.sass

@@ -337,6 +337,20 @@ $colour4: #8a89ba
                         @include box-shadow(none)
     // }}}
 
+
+    // ListView {{{
+    .oe-listview
+        .oe_listview_nocontent
+            > img
+                float: left
+                margin-right: 1.5em
+            > div
+                // don't encroach on my arrow
+                overflow: hidden
+                font-size: 150%
+                width: 60ex
+    // }}}
+
 .openerp
     // Transitional overrides for old styles {{{
     // }}}

addons/web/static/src/js/view_list.js

@@ -747,6 +747,18 @@ openerp.web.ListView = openerp.web.View.extend( /** @lends openerp.web.ListView#
                     .attr('colspan', this.previous_colspan);
             this.previous_colspan = null;
         }
+    },
+    no_result: function () {
+        var help = this.options.action.help;
+        if (this.groups.group_by || !help) {
+            return;
+        }
+        this.$element.children('table').replaceWith(
+            $('<div class="oe_listview_nocontent">')
+                .append($('<img>', {
+                    src: '/web/static/src/img/empty-list-arrow.png',
+                    alt: _t("This list is empty")}))
+                .append($('<div>').html(help)));
     }
 });
 openerp.web.ListView.List = openerp.web.Class.extend( /** @lends openerp.web.ListView.List# */{
@@ -1344,6 +1356,9 @@ openerp.web.ListView.Groups = openerp.web.Class.extend( /** @lends openerp.web.L
             self.records.add(records, {silent: true});
             list.render();
             d.resolve(list);
+            if (_.isEmpty(records)) {
+                view.no_result();
+            }
         });});
         return d.promise();
     },