diff --git a/web_timeline/README.rst b/web_timeline/README.rst
index 78704ad05..cfc190c10 100755
--- a/web_timeline/README.rst
+++ b/web_timeline/README.rst
@@ -39,9 +39,11 @@ the possible attributes for the tag:
   view.
 * colors (optional): it allows to set certain specific colors if the expressed
   condition (JS syntax) is met.
-  
-Optionally you can declare a custom template, which will be used to render the 
-timeline items. You have to name the template 'timeline-item'. 
+* dependency_arrow (optional): set this attribute to a x2many field to draw
+  arrows between the records referenced in the x2many field.
+
+Optionally you can declare a custom template, which will be used to render the
+timeline items. You have to name the template 'timeline-item'.
 These are the variables available in template rendering:
 
 * ``record``: to access the fields values selected in the timeline definition.
@@ -65,7 +67,8 @@ Example:
                           default_group_by="user_id"
                           event_open_popup="true"
                           zoomKey="ctrlKey"
-                          colors="#ec7063:user_id == false;#2ecb71:kanban_state=='done';">
+                          colors="#ec7063:user_id == false;#2ecb71:kanban_state=='done';"
+                          dependency_arrow="task_dependency_ids">
                     <field name="user_id"/>
                     <templates>
                         <div t-name="timeline-item">
diff --git a/web_timeline/__manifest__.py b/web_timeline/__manifest__.py
index bb064f9d6..ca4bd8629 100644
--- a/web_timeline/__manifest__.py
+++ b/web_timeline/__manifest__.py
@@ -4,7 +4,7 @@
 {
     'name': "Web timeline",
     'summary': "Interactive visualization chart to show events in time",
-    "version": "11.0.1.2.1",
+    "version": "11.0.1.3.0",
     'author': 'ACSONE SA/NV, '
               'Tecnativa, '
               'Monk Software, '
diff --git a/web_timeline/models/__init__.py b/web_timeline/models/__init__.py
index e18b8bdef..fd67675a2 100644
--- a/web_timeline/models/__init__.py
+++ b/web_timeline/models/__init__.py
@@ -1,4 +1,4 @@
-# © 2016 ACSONE SA/NV (<http://acsone.eu>)
+# Copyright 2016 ACSONE SA/NV (<http://acsone.eu>)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 from . import ir_view
diff --git a/web_timeline/static/src/css/web_timeline.css b/web_timeline/static/src/css/web_timeline.css
index bfbcaa628..d32d3616e 100644
--- a/web_timeline/static/src/css/web_timeline.css
+++ b/web_timeline/static/src/css/web_timeline.css
@@ -20,3 +20,12 @@
 .oe_timeline_view .vlabel .inner:hover{
     cursor: pointer;
 }
+
+.oe_timeline_view svg.oe_timeline_view_canvas {
+    display: block;
+    width: 100%;
+    height: 100%;
+    position: absolute;
+    left: 0px;
+    top: 0px;
+}
diff --git a/web_timeline/static/src/js/timeline_canvas.js b/web_timeline/static/src/js/timeline_canvas.js
new file mode 100644
index 000000000..e589b5594
--- /dev/null
+++ b/web_timeline/static/src/js/timeline_canvas.js
@@ -0,0 +1,89 @@
+/* Copyright 2018 Onestein
+ * License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). */
+
+odoo.define('web_timeline.TimelineCanvas', function (require) {
+    "use strict";
+    var Widget = require('web.Widget');
+
+    var TimelineCanvas = Widget.extend({
+        template: 'TimelineView.Canvas',
+
+        clear: function() {
+            this.$el.find(' > :not(defs)').remove();
+        },
+
+        get_polyline_points: function(coordx1, coordy1, coordx2, coordy2, width1, height1, width2, height2, widthMarker, breakAt) {
+            var halfHeight1 = height1 / 2;
+            var halfHeight2 = height2 / 2;
+            var x1 = coordx1 - widthMarker;
+            var y1 = coordy1 + halfHeight1;
+            var x2 = coordx2 + width2;
+            var y2 = coordy2 + halfHeight2;
+            var xDiff = x1 - x2;
+            var yDiff = y1 - y2;
+            var threshold = breakAt + widthMarker;
+            var spaceY = halfHeight2 + 6;
+
+            var points = [[x1, y1]];
+            if (y1 !== y2) {
+                if (xDiff > threshold) {
+                    points.push([x1 - breakAt, y1]);
+                    points.push([x1 - breakAt, y1 - yDiff]);
+                } else if (xDiff <= threshold) {
+                    var yDiffSpace = yDiff > 0 ? spaceY : -spaceY;
+                    points.push([x1 - breakAt, y1]);
+                    points.push([x1 - breakAt, y2 + yDiffSpace]);
+                    points.push([x2 + breakAt, y2 + yDiffSpace]);
+                    points.push([x2 + breakAt, y2]);
+                }
+            } else if(x1 < x2) {
+                  points.push([x1 - breakAt, y1]);
+                  points.push([x1 - breakAt, y1 + spaceY]);
+                  points.push([x2 + breakAt, y2 + spaceY]);
+                  points.push([x2 + breakAt, y2]);
+            }
+            points.push([x2, y2]);
+
+            return points;
+        },
+
+        draw_arrow: function(from, to, color, width) {
+            return this.draw_line(from, to, color, width, '#arrowhead', 10, 12);
+        },
+
+        draw_line: function(from, to, color, width, markerStart, widthMarker, breakLineAt) {
+            var x1 = from.offsetLeft,
+                y1 = from.offsetTop + from.parentElement.offsetTop,
+                x2 = to.offsetLeft,
+                y2 = to.offsetTop + to.parentElement.offsetTop,
+                width1 = from.clientWidth,
+                height1 = from.clientHeight,
+                width2 = to.clientWidth,
+                height2 = to.clientHeight;
+
+            var points = this.get_polyline_points(
+                x1, y1, x2, y2, width1, height1, width2, height2, widthMarker, breakLineAt
+            );
+
+            var polyline_points = _.map(points, function(point) {
+                return point.join(',');
+            }).join();
+
+            var line = document.createElementNS(
+                'http://www.w3.org/2000/svg', 'polyline'
+            );
+            line.setAttribute('points', polyline_points);
+            line.setAttribute('stroke', color || '#000');
+            line.setAttribute('stroke-width', width || 1);
+            line.setAttribute('fill', 'none');
+            if (markerStart) {
+                line.setAttribute('marker-start', 'url(' + markerStart + ')');
+            }
+            this.$el.append(line);
+            return line;
+        }
+
+    });
+
+    return TimelineCanvas;
+});
diff --git a/web_timeline/static/src/js/timeline_controller.js b/web_timeline/static/src/js/timeline_controller.js
index cdb197420..a69012979 100644
--- a/web_timeline/static/src/js/timeline_controller.js
+++ b/web_timeline/static/src/js/timeline_controller.js
@@ -5,6 +5,7 @@ var AbstractController = require('web.AbstractController');
 var dialogs = require('web.view_dialogs');
 var core = require('web.core');
 var time = require('web.time');
+var Dialog = require('web.Dialog');
 
 var _t = core._t;
 
@@ -31,6 +32,9 @@ var CalendarController = AbstractController.extend({
         if (_.isEmpty(params)){
             return;
         }
+        var defaults = _.defaults({}, options, {
+            adjust_window: true
+        });
         var self = this;
         var domains = params.domain;
         var contexts = params.context;
@@ -59,7 +63,7 @@ var CalendarController = AbstractController.extend({
             },
             context: self.getSession().user_context,
         }).then(function(data) {
-            return self.renderer.on_data_loaded(data, n_group_bys);
+            return self.renderer.on_data_loaded(data, n_group_bys, defaults.adjust_window);
         });
     },
 
@@ -82,13 +86,13 @@ var CalendarController = AbstractController.extend({
         var id = item.evt.id;
         var title = item.evt.__name;
         if (this.open_popup_action) {
-            var dialog = new dialogs.FormViewDialog(this, {
+            new dialogs.FormViewDialog(this, {
                 res_model: this.model.modelName,
-                res_id: parseInt(id).toString() == id ? parseInt(id) : id,
+                res_id: parseInt(id, 10).toString() === id ? parseInt(id, 10) : id,
                 context: this.getSession().user_context,
                 title: title,
-                view_id: +this.open_popup_action,
-                on_saved: function (record) {
+                view_id: Number(this.open_popup_action),
+                on_saved: function () {
                     self.write_completed();
                 },
             }).open();
@@ -99,7 +103,7 @@ var CalendarController = AbstractController.extend({
             }
             this.trigger_up('switch_view', {
                 view_type: 'form',
-                res_id: parseInt(id).toString() == id ? parseInt(id) : id,
+                res_id: parseInt(id, 10).toString() === id ? parseInt(id, 10) : id,
                 mode: mode,
                 model: this.model.modelName,
             });
@@ -114,7 +118,7 @@ var CalendarController = AbstractController.extend({
         var event_start = item.start;
         var event_end = item.end;
         var group = false;
-        if (item.group != -1) {
+        if (item.group !== -1) {
             group = item.group;
         }
         var data = {};
@@ -145,10 +149,13 @@ var CalendarController = AbstractController.extend({
             context: self.getSession().user_context,
         }).then(function() {
             event.data.callback(event.data.item);
+            self.write_completed({
+                adjust_window: false
+            });
         });
     },
 
-    _onRemove: function(event) {
+    _onRemove: function(e) {
         var self = this;
 
         function do_it(event) {
@@ -162,8 +169,9 @@ var CalendarController = AbstractController.extend({
             }).then(function() {
                 var unlink_index = false;
                 for (var i=0; i<self.model.data.data.length; i++) {
-                    if (self.model.data.data[i].id == event.data.item.id)
+                    if (self.model.data.data[i].id === event.data.item.id) {
                         unlink_index = i;
+                    }
                 }
                 if (!isNaN(unlink_index)) {
                     self.model.data.data.splice(unlink_index, 1);
@@ -173,9 +181,17 @@ var CalendarController = AbstractController.extend({
             });
         }
 
-        if (confirm(_t("Are you sure you want to delete this record ?"))) {
-            return do_it(event);
-        }
+        var message = _t("Are you sure you want to delete this record?");
+        var def = $.Deferred();
+        Dialog.confirm(this, message, {
+            title: _t("Warning"),
+            confirm_callback: function() {
+                do_it(e)
+                    .done(def.resolve.bind(def, true))
+                    .fail(def.reject.bind(def));
+            },
+        });
+        return def.promise();
     },
 
     _onAdd: function(event) {
@@ -194,11 +210,11 @@ var CalendarController = AbstractController.extend({
             default_context['default_'.concat(this.renderer.last_group_bys[0])] = item.group;
         }
         // Show popup
-        var dialog = new dialogs.FormViewDialog(this, {
+        new dialogs.FormViewDialog(this, {
             res_model: this.model.modelName,
             res_id: null,
             context: _.extend(default_context, this.context),
-            view_id: +this.open_popup_action,
+            view_id: Number(this.open_popup_action),
             on_saved: function (record) {
                 self.create_completed([record.res_id]);
             },
@@ -226,13 +242,14 @@ var CalendarController = AbstractController.extend({
         });
     },
 
-    write_completed: function () {
+    write_completed: function (options) {
         var params = {
             domain: this.renderer.last_domains,
             context: this.context,
             groupBy: this.renderer.last_group_bys,
         };
-        this.update(params, null);
+
+        this.update(params, options);
     },
 });
 
diff --git a/web_timeline/static/src/js/timeline_renderer.js b/web_timeline/static/src/js/timeline_renderer.js
index 1deec9c02..dbb17e095 100644
--- a/web_timeline/static/src/js/timeline_renderer.js
+++ b/web_timeline/static/src/js/timeline_renderer.js
@@ -8,6 +8,7 @@ var utils = require('web.utils');
 var session = require('web.session');
 var QWeb = require('web.QWeb');
 var field_utils = require('web.field_utils');
+var TimelineCanvas = require('web_timeline.TimelineCanvas');
 
 
 var _t = core._t;
@@ -29,6 +30,7 @@ var CalendarRenderer = AbstractRenderer.extend({
         this.date_delay = params.date_delay;
         this.colors = params.colors;
         this.fieldNames = params.fieldNames;
+        this.dependency_arrow = params.dependency_arrow;
         this.view = params.view;
         this.modelClass = this.view.model;
     },
@@ -64,16 +66,21 @@ var CalendarRenderer = AbstractRenderer.extend({
 
     add_events: function() {
         var self = this;
-        this.$(".oe_timeline_button_today").click(function(){
-            self._onTodayClicked();});
-        this.$(".oe_timeline_button_scale_day").click(function(){
-            self._onScaleDayClicked();});
-        this.$(".oe_timeline_button_scale_week").click(function(){
-            self._onScaleWeekClicked();});
-        this.$(".oe_timeline_button_scale_month").click(function(){
-            self._onScaleMonthClicked();});
-        this.$(".oe_timeline_button_scale_year").click(function(){
-            self._onScaleYearClicked();});
+        this.$(".oe_timeline_button_today").click(function() {
+            self._onTodayClicked();
+        });
+        this.$(".oe_timeline_button_scale_day").click(function() {
+            self._onScaleDayClicked();
+        });
+        this.$(".oe_timeline_button_scale_week").click(function() {
+            self._onScaleWeekClicked();
+        });
+        this.$(".oe_timeline_button_scale_month").click(function() {
+            self._onScaleMonthClicked();
+        });
+        this.$(".oe_timeline_button_scale_year").click(function() {
+            self._onScaleYearClicked();
+        });
     },
 
     _onTodayClicked: function () {
@@ -156,8 +163,8 @@ var CalendarRenderer = AbstractRenderer.extend({
             onUpdate: self.on_update,
             onRemove: self.on_remove,
         });
+        this.qweb = new QWeb(session.debug, {_s: session.origin}, false);
         if (this.arch.children.length) {
-            this.qweb = new QWeb(session.debug, {_s: session.origin}, false);
             var tmpl = utils.json_node_to_xml(
                 _.filter(this.arch.children, function(item) {
                     return item.tag === 'templates';
@@ -176,9 +183,47 @@ var CalendarRenderer = AbstractRenderer.extend({
         this.last_group_bys = group_bys;
         this.last_domains = this.modelClass.data.domain;
         this.on_data_loaded(this.modelClass.data.data, group_bys);
+        this.$centerContainer = $(this.timeline.dom.centerContainer);
+        this.canvas = new TimelineCanvas(this);
+        this.canvas.appendTo(this.$centerContainer);
+        this.timeline.on('changed', function() {
+            self.draw_canvas();
+        });
     },
 
-    on_data_loaded: function (events, group_bys) {
+    draw_canvas: function() {
+        this.canvas.clear();
+        if (this.dependency_arrow) {
+            this.draw_dependencies();
+        }
+    },
+
+    draw_dependencies: function() {
+        var self = this;
+        var items = this.timeline.itemSet.items;
+        _.each(items, function(item) {
+            _.each(item.data.evt[self.dependency_arrow], function(id) {
+                if (id in items) {
+                    self.draw_dependency(item, items[id]);
+                }
+            });
+        });
+    },
+
+    draw_dependency: function(from, to, options) {
+        if (!from.displayed || !to.displayed) {
+            return;
+        }
+
+        var defaults = _.defaults({}, options, {
+            line_color: 'black',
+            line_width: 1
+        });
+
+        this.canvas.draw_arrow(from.dom.box, to.dom.box, defaults.line_color, defaults.line_width);
+    },
+
+    on_data_loaded: function (events, group_bys, adjust_window) {
         var self = this;
         var ids = _.pluck(events, "id");
         return this._rpc({
@@ -196,11 +241,11 @@ var CalendarRenderer = AbstractRenderer.extend({
                     })[1]
                 }, event);
             });
-            return self.on_data_loaded_2(nevents, group_bys);
+            return self.on_data_loaded_2(nevents, group_bys, adjust_window);
         });
     },
 
-    on_data_loaded_2: function (events, group_bys) {
+    on_data_loaded_2: function (events, group_bys, adjust_window) {
         var self = this;
         var data = [];
         var groups = [];
@@ -213,7 +258,9 @@ var CalendarRenderer = AbstractRenderer.extend({
         groups = this.split_groups(events, group_bys);
         this.timeline.setGroups(groups);
         this.timeline.setItems(data);
-        if (!this.mode || this.mode == 'fit'){
+        var mode = !this.mode || this.mode === 'fit';
+        var adjust = _.isUndefined(adjust_window) || adjust_window;
+        if (mode && adjust) {
             this.timeline.fit();
         }
     },
@@ -229,11 +276,15 @@ var CalendarRenderer = AbstractRenderer.extend({
             var group_name = event[_.first(group_bys)];
             if (group_name) {
                 if (group_name instanceof Array) {
-                    var group = _.find(groups, function (group) {
-                        return _.isEqual(group.id, group_name[0]);
+                    var group = _.find(groups, function (existing_group) {
+                        return _.isEqual(existing_group.id, group_name[0]);
                     });
-                    if (group == null) {
-                        group = {id: group_name[0], content: group_name[1]};
+
+                    if (_.isUndefined(group)) {
+                        group = {
+                            id: group_name[0],
+                            content: group_name[1]
+                        };
                         groups.push(group);
                     }
                 }
@@ -262,8 +313,7 @@ var CalendarRenderer = AbstractRenderer.extend({
             date_start = time.auto_str_to_date(evt[this.date_start]);
             date_stop = this.date_stop ? time.auto_str_to_date(evt[this.date_stop]) : null;
         }
-        if (date_start) {
-        }
+
         if (!date_stop && date_delay) {
             date_stop = moment(date_start).add(date_delay, 'hours').toDate();
         }
@@ -280,16 +330,9 @@ var CalendarRenderer = AbstractRenderer.extend({
             }
         });
 
-        var content = evt.__name != undefined ? evt.__name : evt.display_name;
+        var content = _.isUndefined(evt.__name) ? evt.display_name : evt.__name;
         if (this.arch.children.length) {
-            if(this.qweb.has_template('timeline-item')) {
-                content = this.qweb.render('timeline-item', {
-                    'record': evt,
-                    'field_utils': field_utils
-                });
-            } else {
-                console.error(_t('Template "timeline-item" not present in timeline view definition.'));
-            }
+            content = this.render_timeline_item(evt);
         }
 
         var r = {
@@ -308,10 +351,25 @@ var CalendarRenderer = AbstractRenderer.extend({
         return r;
     },
 
+    render_timeline_item: function(evt) {
+        if(this.qweb.has_template('timeline-item')) {
+            return this.qweb.render('timeline-item', {
+                'record': evt,
+                'field_utils': field_utils
+            });
+        }
+
+        console.error(
+            _t('Template "timeline-item" not present in timeline view definition.')
+        );
+    },
+
     on_group_click: function (e) {
         // handle a click on a group header
-        if (e.what === 'group-label' && e.group != -1) {
-            this._trigger(e, function(){}, 'onGroupClick');
+        if (e.what === 'group-label' && e.group !== -1) {
+            this._trigger(e, function() {
+                // Do nothing
+            }, 'onGroupClick');
         }
     },
 
diff --git a/web_timeline/static/src/js/timeline_view.js b/web_timeline/static/src/js/timeline_view.js
index 76f329000..63a1e027f 100644
--- a/web_timeline/static/src/js/timeline_view.js
+++ b/web_timeline/static/src/js/timeline_view.js
@@ -84,11 +84,16 @@ odoo.define('web_timeline.TimelineView', function (require) {
                 fieldNames.push(this.colors[i].field);
             }
 
+            if (attrs.dependency_arrow) {
+                fieldNames.push(attrs.dependency_arrow);
+            }
+
             this.permissions = {};
             this.grouped_by = false;
             this.date_start = attrs.date_start;
             this.date_stop = attrs.date_stop;
             this.date_delay = attrs.date_delay;
+            this.dependency_arrow = attrs.dependency_arrow;
 
             this.no_period = this.date_start === this.date_stop;
             this.zoomKey = attrs.zoomKey || '';
@@ -125,6 +130,7 @@ odoo.define('web_timeline.TimelineView', function (require) {
             this.rendererParams.colors = this.colors;
             this.rendererParams.fieldNames = fieldNames;
             this.rendererParams.view = this;
+            this.rendererParams.dependency_arrow = this.dependency_arrow;
             this.loadParams.modelName = this.modelName;
             this.loadParams.fieldNames = fieldNames;
             this.controllerParams.open_popup_action = this.open_popup_action;
diff --git a/web_timeline/static/src/xml/web_timeline.xml b/web_timeline/static/src/xml/web_timeline.xml
index dc89e4282..1c2f7c9db 100644
--- a/web_timeline/static/src/xml/web_timeline.xml
+++ b/web_timeline/static/src/xml/web_timeline.xml
@@ -14,4 +14,13 @@
       <div class="oe_timeline_widget" />
     </div>
   </t>
+
+  <svg t-name="TimelineView.Canvas"
+       class="oe_timeline_view_canvas">
+      <defs>
+          <marker id="arrowhead" markerWidth="10" markerHeight="7" refX="10" refY="3.5" orient="auto">
+              <polygon points="10 0, 10 7, 0 3.5" />
+          </marker>
+      </defs>
+  </svg>
 </template>
diff --git a/web_timeline/views/web_timeline.xml b/web_timeline/views/web_timeline.xml
index 4ce387c5f..f6a7db2cf 100644
--- a/web_timeline/views/web_timeline.xml
+++ b/web_timeline/views/web_timeline.xml
@@ -11,6 +11,7 @@
             <script type="text/javascript" src="/web_timeline/static/src/js/timeline_renderer.js"/>
             <script type="text/javascript" src="/web_timeline/static/src/js/timeline_controller.js"/>
             <script type="text/javascript" src="/web_timeline/static/src/js/timeline_model.js"/>
+            <script type="text/javascript" src="/web_timeline/static/src/js/timeline_canvas.js"/>
         </xpath>
     </template>