initial commit 2

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diff --git a/addons/web/static/src/js/tools/debug_manager_backend.js b/addons/web/static/src/js/tools/debug_manager_backend.js
new file mode 100644
index 00000000..2dd8fc0d
--- /dev/null
+++ b/addons/web/static/src/js/tools/debug_manager_backend.js
@@ -0,0 +1,807 @@
+odoo.define('web.DebugManager.Backend', function (require) {
+"use strict";
+
+var ActionManager = require('web.ActionManager');
+var DebugManager = require('web.DebugManager');
+var dialogs = require('web.view_dialogs');
+var startClickEverywhere = require('web.clickEverywhere');
+var config = require('web.config');
+var core = require('web.core');
+var Dialog = require('web.Dialog');
+var field_utils = require('web.field_utils');
+var SystrayMenu = require('web.SystrayMenu');
+var utils = require('web.utils');
+var WebClient = require('web.WebClient');
+var Widget = require('web.Widget');
+
+var QWeb = core.qweb;
+var _t = core._t;
+
+/**
+ * DebugManager features depending on backend
+ */
+DebugManager.include({
+    requests_clear: function () {
+        if (!this._events) {
+            return;
+        }
+        this._events = [];
+        this.trigger('update-stats', this._events);
+    },
+    show_timelines: function () {
+        if (this._overlay) {
+            this._overlay.destroy();
+            this._overlay = null;
+            return;
+        }
+        this._overlay = new RequestsOverlay(this);
+        this._overlay.appendTo(document.body);
+    },
+
+    /**
+     * Updates current action (action descriptor) on tag = action,
+     */
+    update: function (tag, descriptor) {
+        return this._super().then(function () {
+            this.$dropdown.find(".o_debug_split_assets").before(QWeb.render('WebClient.DebugManager.Backend', {
+                manager: this,
+            }));
+        }.bind(this));
+    },
+    select_view: function () {
+        var self = this;
+        new dialogs.SelectCreateDialog(this, {
+            res_model: 'ir.ui.view',
+            title: _t('Select a view'),
+            disable_multiple_selection: true,
+            domain: [['type', '!=', 'qweb'], ['type', '!=', 'search']],
+            on_selected: function (records) {
+                self._rpc({
+                        model: 'ir.ui.view',
+                        method: 'search_read',
+                        domain: [['id', '=', records[0].id]],
+                        fields: ['name', 'model', 'type'],
+                        limit: 1,
+                    })
+                    .then(function (views) {
+                        var view = views[0];
+                        view.type = view.type === 'tree' ? 'list' : view.type; // ignore tree view
+                        self.do_action({
+                            type: 'ir.actions.act_window',
+                            name: view.name,
+                            res_model: view.model,
+                            views: [[view.id, view.type]]
+                        });
+                    });
+            }
+        }).open();
+    },
+    /**
+     * Runs the JS (desktop) tests
+     */
+    perform_js_tests: function () {
+        this.do_action({
+            name: _t("JS Tests"),
+            target: 'new',
+            type: 'ir.actions.act_url',
+            url: '/web/tests?mod=*'
+        });
+    },
+    /**
+     * Runs the JS mobile tests
+     */
+    perform_js_mobile_tests: function () {
+        this.do_action({
+            name: _t("JS Mobile Tests"),
+            target: 'new',
+            type: 'ir.actions.act_url',
+            url: '/web/tests/mobile?mod=*'
+        });
+    },
+    perform_click_everywhere_test: function () {
+        var $homeMenu = $("nav.o_main_navbar > a.o_menu_toggle.fa-th");
+        $homeMenu.click();
+        startClickEverywhere();
+    },
+});
+
+/**
+ * DebugManager features depending on having an action, and possibly a model
+ * (window action)
+ */
+DebugManager.include({
+    async start() {
+        const [_, canSeeRecordRules, canSeeModelAccess] = await Promise.all([
+            this._super(...arguments),
+            this._checkAccessRight('ir.rule', 'read'),
+            this._checkAccessRight('ir.model.access', 'read'),
+        ])
+        this.canSeeRecordRules = canSeeRecordRules;
+        this.canSeeModelAccess = canSeeModelAccess;
+    },
+    /**
+     * Return the ir.model id from the model name
+     * @param {string} modelName
+     */
+    async getModelId(modelName) {
+        const [modelId] = await this._rpc({
+            model: 'ir.model',
+            method: 'search',
+            args: [[['model', '=', modelName]]],
+            kwargs: { limit: 1},
+        });
+        return modelId
+    },
+    /**
+     * Updates current action (action descriptor) on tag = action,
+     */
+    update: function (tag, descriptor) {
+        if (tag === 'action') {
+            this._action = descriptor;
+        }
+        return this._super().then(function () {
+            this.$dropdown.find(".o_debug_leave_section").before(QWeb.render('WebClient.DebugManager.Action', {
+                manager: this,
+                action: this._action
+            }));
+        }.bind(this));
+    },
+    edit: function (params, evt) {
+        this.do_action({
+            res_model: params.model,
+            res_id: params.id,
+            name: evt.target.text,
+            type: 'ir.actions.act_window',
+            views: [[false, 'form']],
+            view_mode: 'form',
+            target: 'new',
+            flags: {action_buttons: true, headless: true}
+        });
+    },
+    async get_view_fields () {
+        const modelId = await this.getModelId(this._action.res_model);
+        this.do_action({
+            res_model: 'ir.model.fields',
+            name: _t('View Fields'),
+            views: [[false, 'list'], [false, 'form']],
+            domain: [['model_id', '=', modelId]],
+            type: 'ir.actions.act_window',
+            context: {
+                'default_model_id': modelId
+            }
+        });
+    },
+    manage_filters: function () {
+        this.do_action({
+            res_model: 'ir.filters',
+            name: _t('Manage Filters'),
+            views: [[false, 'list'], [false, 'form']],
+            type: 'ir.actions.act_window',
+            context: {
+                search_default_my_filters: true,
+                search_default_model_id: this._action.res_model
+            }
+        });
+    },
+    translate: function() {
+        this._rpc({
+                model: 'ir.translation',
+                method: 'get_technical_translations',
+                args: [this._action.res_model],
+            })
+            .then(this.do_action);
+    },
+    async actionRecordRules() {
+        const modelId = await this.getModelId(this._action.res_model);
+        this.do_action({
+            res_model: 'ir.rule',
+            name: _t('Model Record Rules'),
+            views: [[false, 'list'], [false, 'form']],
+            domain: [['model_id', '=', modelId]],
+            type: 'ir.actions.act_window',
+            context: {
+                'default_model_id': modelId,
+            },
+        });
+    },
+    async actionModelAccess() {
+        const modelId = await this.getModelId(this._action.res_model);
+        this.do_action({
+            res_model: 'ir.model.access',
+            name: _t('Model Access'),
+            views: [[false, 'list'], [false, 'form']],
+            domain: [['model_id', '=', modelId]],
+            type: 'ir.actions.act_window',
+            context: {
+                'default_model_id': modelId,
+            },
+        });
+    },
+});
+
+/**
+ * DebugManager features depending on having a form view or single record.
+ * These could theoretically be split, but for now they'll be considered one
+ * and the same.
+ */
+DebugManager.include({
+    start: function () {
+        this._can_edit_views = false;
+        return Promise.all([
+            this._super(),
+            this._checkAccessRight('ir.ui.view', 'write')
+                .then(function (ar) {
+                    this._can_edit_views = ar;
+                }.bind(this))
+            ]
+        );
+    },
+    update: function (tag, descriptor, widget) {
+        if (tag === 'action' || tag === 'view') {
+            this._controller = widget;
+        }
+        return this._super(tag, descriptor).then(function () {
+            this.$dropdown.find(".o_debug_leave_section").before(QWeb.render('WebClient.DebugManager.View', {
+                action: this._action,
+                can_edit: this._can_edit_views,
+                controller: this._controller,
+                withControlPanel: this._controller && this._controller.withControlPanel,
+                manager: this,
+                view: this._controller && _.findWhere(this._action.views, {
+                    type: this._controller.viewType,
+                }),
+            }));
+        }.bind(this));
+    },
+    get_attachments: function() {
+        var selectedIDs = this._controller.getSelectedIds();
+        if (!selectedIDs.length) {
+            console.warn(_t("No attachment available"));
+            return;
+        }
+        this.do_action({
+            res_model: 'ir.attachment',
+            name: _t('Manage Attachments'),
+            views: [[false, 'list'], [false, 'form']],
+            type: 'ir.actions.act_window',
+            domain: [['res_model', '=', this._action.res_model], ['res_id', '=', selectedIDs[0]]],
+            context: {
+                default_res_model: this._action.res_model,
+                default_res_id: selectedIDs[0],
+            },
+        });
+    },
+    get_metadata: function() {
+        var self = this;
+        var selectedIDs = this._controller.getSelectedIds();
+        if (!selectedIDs.length) {
+            console.warn(_t("No metadata available"));
+            return;
+        }
+        this._rpc({
+            model: this._action.res_model,
+            method: 'get_metadata',
+            args: [selectedIDs],
+        }).then(function(result) {
+            var metadata = result[0];
+            metadata.creator = field_utils.format.many2one(metadata.create_uid);
+            metadata.lastModifiedBy = field_utils.format.many2one(metadata.write_uid);
+            var createDate = field_utils.parse.datetime(metadata.create_date);
+            metadata.create_date = field_utils.format.datetime(createDate);
+            var modificationDate = field_utils.parse.datetime(metadata.write_date);
+            metadata.write_date = field_utils.format.datetime(modificationDate);
+            var dialog = new Dialog(this, {
+                title: _.str.sprintf(_t("Metadata (%s)"), self._action.res_model),
+                size: 'medium',
+                $content: QWeb.render('WebClient.DebugViewLog', {
+                    perm : metadata,
+                })
+            });
+            dialog.open().opened(function () {
+                dialog.$el.on('click', 'a[data-action="toggle_noupdate"]', function (ev) {
+                    ev.preventDefault();
+                    self._rpc({
+                        model: 'ir.model.data',
+                        method: 'toggle_noupdate',
+                        args: [self._action.res_model, metadata.id]
+                    }).then(function (res) {
+                        dialog.close();
+                        self.get_metadata();
+                    })
+                });
+            })
+        });
+    },
+    set_defaults: function() {
+        var self = this;
+
+        var display = function (fieldInfo, value) {
+            var displayed = value;
+            if (value && fieldInfo.type === 'many2one') {
+                displayed = value.data.display_name;
+                value = value.data.id;
+            } else if (value && fieldInfo.type === 'selection') {
+                displayed = _.find(fieldInfo.selection, function (option) {
+                    return option[0] === value;
+                })[1];
+            }
+            return [value, displayed];
+        };
+
+        var renderer = this._controller.renderer;
+        var state = renderer.state;
+        var fields = state.fields;
+        var fieldsInfo = state.fieldsInfo.form;
+        var fieldNamesInView = state.getFieldNames();
+        var fieldNamesOnlyOnView = ['message_attachment_count'];
+        var fieldsValues = state.data;
+        var modifierDatas = {};
+        _.each(fieldNamesInView, function (fieldName) {
+            modifierDatas[fieldName] = _.find(renderer.allModifiersData, function (modifierdata) {
+                return modifierdata.node.attrs.name === fieldName;
+            });
+        });
+        this.fields = _.chain(fieldNamesInView)
+            .difference(fieldNamesOnlyOnView)
+            .map(function (fieldName) {
+                var modifierData = modifierDatas[fieldName];
+                var invisibleOrReadOnly;
+                if (modifierData) {
+                    var evaluatedModifiers = modifierData.evaluatedModifiers[state.id];
+                    invisibleOrReadOnly = evaluatedModifiers.invisible || evaluatedModifiers.readonly;
+                }
+                var fieldInfo = fields[fieldName];
+                var valueDisplayed = display(fieldInfo, fieldsValues[fieldName]);
+                var value = valueDisplayed[0];
+                var displayed = valueDisplayed[1];
+                // ignore fields which are empty, invisible, readonly, o2m
+                // or m2m
+                if (!value || invisibleOrReadOnly || fieldInfo.type === 'one2many' ||
+                    fieldInfo.type === 'many2many' || fieldInfo.type === 'binary' ||
+                    fieldsInfo[fieldName].options.isPassword || !_.isEmpty(fieldInfo.depends)) {
+                    return false;
+                }
+                return {
+                    name: fieldName,
+                    string: fieldInfo.string,
+                    value: value,
+                    displayed: displayed,
+                };
+            })
+            .compact()
+            .sortBy(function (field) { return field.string; })
+            .value();
+
+        var conditions = _.chain(fieldNamesInView)
+            .filter(function (fieldName) {
+                var fieldInfo = fields[fieldName];
+                return fieldInfo.change_default;
+            })
+            .map(function (fieldName) {
+                var fieldInfo = fields[fieldName];
+                var valueDisplayed = display(fieldInfo, fieldsValues[fieldName]);
+                var value = valueDisplayed[0];
+                var displayed = valueDisplayed[1];
+                return {
+                    name: fieldName,
+                    string: fieldInfo.string,
+                    value: value,
+                    displayed: displayed,
+                };
+            })
+            .value();
+        var d = new Dialog(this, {
+            title: _t("Set Default"),
+            buttons: [
+                {text: _t("Close"), close: true},
+                {text: _t("Save default"), click: function () {
+                    var $defaults = d.$el.find('#formview_default_fields');
+                    var fieldToSet = $defaults.val();
+                    if (!fieldToSet) {
+                        $defaults.parent().addClass('o_form_invalid');
+                        return;
+                    }
+                    var selfUser = d.$el.find('#formview_default_self').is(':checked');
+                    var condition = d.$el.find('#formview_default_conditions').val();
+                    var value = _.find(self.fields, function (field) {
+                        return field.name === fieldToSet;
+                    }).value;
+                    self._rpc({
+                        model: 'ir.default',
+                        method: 'set',
+                        args: [
+                            self._action.res_model,
+                            fieldToSet,
+                            value,
+                            selfUser,
+                            true,
+                            condition || false,
+                        ],
+                    }).then(function () { d.close(); });
+                }}
+            ]
+        });
+        d.args = {
+            fields: this.fields,
+            conditions: conditions,
+        };
+        d.template = 'FormView.set_default';
+        d.open();
+    },
+    fvg: function() {
+        var self = this;
+        var dialog = new Dialog(this, { title: _t("Fields View Get") });
+        dialog.opened().then(function () {
+            $('<pre>').text(utils.json_node_to_xml(
+                self._controller.renderer.arch, true)
+            ).appendTo(dialog.$el);
+        });
+        dialog.open();
+    },
+});
+function make_context(width, height, fn) {
+    var canvas = document.createElement('canvas');
+    canvas.width = width;
+    canvas.height = height;
+    // make e.layerX/e.layerY imitate e.offsetX/e.offsetY.
+    canvas.style.position = 'relative';
+    var ctx = canvas.getContext('2d');
+    ctx.imageSmoothingEnabled = false;
+    ctx.mozImageSmoothingEnabled = false;
+    ctx.oImageSmoothingEnabled = false;
+    ctx.webkitImageSmoothingEnabled = false;
+    fn && fn(ctx);
+    return ctx;
+}
+var RequestsOverlay = Widget.extend({
+    template: 'WebClient.DebugManager.RequestsOverlay',
+    TRACKS: 8,
+    TRACK_WIDTH: 9,
+    events: {
+        mousemove: function (e) {
+            this.$tooltip.hide();
+        }
+    },
+    init: function () {
+        this._super.apply(this, arguments);
+        this._render = _.throttle(
+            this._render.bind(this),
+            1000/15, {leading: false}
+        );
+    },
+    start: function () {
+        var _super = this._super();
+        this.$tooltip = this.$('div.o_debug_tooltip');
+        this.getParent().on('update-stats', this, this._render);
+        this._render();
+        return _super;
+    },
+    tooltip: function (text, start, end, x, y) {
+        // x and y are hit point with respect to the viewport. To know where
+        // this hit point is with respect to the overlay, subtract the offset
+        // between viewport and overlay, then add scroll factor of overlay
+        // (which isn't taken in account by the viewport).
+        //
+        // Normally the viewport overlay should sum offsets of all
+        // offsetParents until we reach `null` but in this case the overlay
+        // should have been added directly to the body, which should have an
+        // offset of 0.
+
+        var top = y - this.el.offsetTop + this.el.scrollTop + 1;
+        var left = x - this.el.offsetLeft + this.el.scrollLeft + 1;
+        this.$tooltip.css({top: top, left: left}).show()[0].innerHTML = ['<p>', text, ' (', (end - start), 'ms)', '</p>'].join('');
+    },
+
+    _render: function () {
+        var $summary = this.$('header'),
+            w = $summary[0].clientWidth,
+            $requests = this.$('.o_debug_requests');
+        $summary.find('canvas').attr('width', w);
+        var tracks = document.getElementById('o_debug_requests_summary');
+
+        _.invoke(this.getChildren(), 'destroy');
+
+        var requests = this.getParent()._events;
+        var bounds = this._get_bounds(requests);
+        // horizontal scaling factor for summary
+        var scale = w / (bounds.high - bounds.low);
+
+        // store end-time of "current" requests, to find out which track a
+        // request should go in, just look for the first track whose end-time
+        // is smaller than the new request's start time.
+        var track_ends = _(this.TRACKS).times(_.constant(-Infinity));
+
+        var ctx = tracks.getContext('2d');
+        ctx.lineWidth = this.TRACK_WIDTH;
+        for (var i = 0; i < requests.length; i++) {
+            var request = requests[i];
+            // FIXME: is it certain that events in the request are sorted by timestamp?
+            var rstart = Math.floor(request[0][3] * 1e3);
+            var rend = Math.ceil(request[request.length - 1][3] * 1e3);
+            // find free track for current request
+            for(var track=0; track < track_ends.length; ++track) {
+                if (track_ends[track] < rstart) { break; }
+            }
+            // FIXME: display error message of some sort? Re-render with larger area? Something?
+            if (track >= track_ends.length) {
+                console.warn("could not find an empty summary track");
+                continue;
+            }
+            // set new track end
+            track_ends[track] = rend;
+            ctx.save();
+            ctx.translate(Math.floor((rstart - bounds.low) * scale), track * (this.TRACK_WIDTH + 1));
+            this._draw_request(request, ctx, 0, scale);
+            ctx.restore();
+            new RequestDetails(this, request, scale).appendTo($requests);
+        }
+    },
+    _draw_request: function (request, to_context, step, hscale, handle_event) {
+        // have one draw surface for each event type:
+        // * no need to alter context from one event to the next, each surface
+        //   gets its own color for all its lifetime
+        // * surfaces can be blended in a specified order, which means events
+        //   can be drawn in any order, no need to care about z-index while
+        //   serializing events to the surfaces
+        var surfaces = {
+            request: make_context(to_context.canvas.width, to_context.canvas.height, function (ctx) {
+                ctx.strokeStyle = 'blue';
+                ctx.fillStyle = '#88f';
+                ctx.lineJoin = 'round';
+                ctx.lineWidth = 1;
+            }),
+            //func: make_context(to_context.canvas.width, to_context.canvas.height, function (ctx) {
+            //    ctx.strokeStyle = 'gray';
+            //    ctx.lineWidth = to_context.lineWidth;
+            //    ctx.translate(0, initial_offset);
+            //}),
+            sql: make_context(to_context.canvas.width, to_context.canvas.height, function (ctx) {
+                ctx.strokeStyle = 'red';
+                ctx.fillStyle = '#f88';
+                ctx.lineJoin = 'round';
+                ctx.lineWidth = 1;
+            }),
+            template: make_context(to_context.canvas.width, to_context.canvas.height, function (ctx) {
+                ctx.strokeStyle = 'green';
+                ctx.fillStyle = '#8f8';
+                ctx.lineJoin = 'round';
+                ctx.lineWidth = 1;
+            })
+        };
+        // apply scaling manually so zooming in improves display precision
+        var stacks = {}, start = Math.floor(request[0][3] * 1e3 * hscale);
+        var event_idx = 0;
+
+        var rect_width = to_context.lineWidth;
+        for (var i = 0; i < request.length; i++) {
+            var type, m, event = request[i];
+            var tag = event[0], timestamp = Math.floor(event[3] * 1e3 * hscale) - start;
+
+            if (m = /(\w+)-start/.exec(tag)) {
+                type = m[1];
+                if (!(type in stacks)) { stacks[type] = []; }
+                handle_event && handle_event(event_idx, timestamp, event);
+                stacks[type].push({
+                    timestamp: timestamp,
+                    idx: event_idx++
+                });
+            } else if (m = /(\w+)-end/.exec(tag)) {
+                type = m[1];
+                var stack = stacks[type];
+                var estart = stack.pop(), duration = Math.ceil(timestamp - estart.timestamp);
+                handle_event && handle_event(estart.idx, timestamp, event);
+
+                var surface = surfaces[type];
+                if (!surface) { continue; } // FIXME: support for unknown event types
+
+                var y = step * estart.idx;
+                // path rectangle for the current event on the relevant surface
+                surface.rect(estart.timestamp + 0.5, y + 0.5, duration || 1, rect_width);
+            }
+        }
+        // add each layer to the main canvas
+        var keys = ['request', /*'func', */'template', 'sql'];
+        for (var j = 0; j < keys.length; ++j) {
+            // stroke and fill all rectangles for the relevant surface/context
+            var ctx = surfaces[keys[j]];
+            ctx.fill();
+            ctx.stroke();
+            to_context.drawImage(ctx.canvas, 0, 0);
+        }
+    },
+    /**
+     * Returns first and last events in milliseconds
+     *
+     * @param requests
+     * @returns {{low: number, high: number}}
+     * @private
+     */
+    _get_bounds: function (requests) {
+        var low = +Infinity;
+        var high =-+Infinity;
+
+        for (var i = 0; i < requests.length; i++) {
+            var request = requests[i];
+            for (var j = 0; j < request.length; j++) {
+                var event = request[j];
+                var timestamp = event[3];
+                low = Math.min(low, timestamp);
+                high = Math.max(high, timestamp);
+            }
+        }
+        return {low: Math.floor(low * 1e3), high: Math.ceil(high * 1e3)};
+    }
+});
+var RequestDetails = Widget.extend({
+    events: {
+        click: function () {
+            this._open = !this._open;
+            this.render();
+        },
+        'mousemove canvas': function (e) {
+            e.stopPropagation();
+            var y = e.y || e.offsetY || e.layerY;
+            if (!y) { return; }
+            var event = this._payloads[Math.floor(y / this._REQ_HEIGHT)];
+            if (!event) { return; }
+
+            this.getParent().tooltip(event.payload, event.start, event.stop, e.clientX, e.clientY);
+        }
+    },
+    init: function (parent, request, scale) {
+        this._super.apply(this, arguments);
+        this._request = request;
+        this._open = false;
+        this._scale = scale;
+        this._REQ_HEIGHT = 20;
+    },
+    start: function () {
+        this.el.style.borderBottom = '1px solid black';
+        this.render();
+        return this._super();
+    },
+    render: function () {
+        var request_cell_height = this._REQ_HEIGHT, TITLE_WIDTH = 200;
+        var request = this._request;
+        var req_start = request[0][3] * 1e3;
+        var req_duration = request[request.length - 1][3] * 1e3 - req_start;
+        var height = request_cell_height * (this._open ? request.length / 2 : 1);
+        var cell_center = request_cell_height / 2;
+        var ctx = make_context(210 + Math.ceil(req_duration * this._scale), height, function (ctx) {
+            ctx.lineWidth = cell_center;
+        });
+        this.$el.empty().append(ctx.canvas);
+        var payloads = this._payloads = [];
+
+        // lazy version: if the render is single-line (!this._open), the extra
+        // content will be discarded when the text canvas gets pasted onto the
+        // main canvas. An improvement would be to not do text rendering
+        // beyond the first event for "closed" requests events… then again
+        // that makes for more regular rendering profile?
+        var text_ctx = make_context(TITLE_WIDTH, height, function (ctx) {
+            ctx.font = '12px sans-serif';
+            ctx.textAlign = 'right';
+            ctx.textBaseline = 'middle';
+            ctx.translate(0, cell_center);
+        });
+
+        ctx.save();
+        ctx.translate(TITLE_WIDTH + 10, ((request_cell_height/4)|0));
+
+        this.getParent()._draw_request(request, ctx, this._open ? request_cell_height : 0, this._scale, function (idx, timestamp, event) {
+            if (/-start$/g.test(event[0])) {
+                payloads.push({
+                    payload: event[2],
+                    start: timestamp,
+                    stop: null
+                });
+
+                // we want ~200px wide, assume the average character is at
+                // least 4px wide => there can be *at most* 49 characters
+                var title = event[2];
+                title = title.replace(/\s+$/, '');
+                title = title.length <= 50 ? title : ('…' + title.slice(-49));
+                while (text_ctx.measureText(title).width > 200) {
+                    title = '…' + title.slice(2);
+                }
+                text_ctx.fillText(title, TITLE_WIDTH, request_cell_height * idx);
+            } else if (/-end$/g.test(event[0])) {
+                payloads[idx].stop = timestamp;
+            }
+        });
+        ctx.restore();
+        // add the text layer to the main canvas
+        ctx.drawImage(text_ctx.canvas, 0, 0);
+    }
+});
+
+if (config.isDebug()) {
+    SystrayMenu.Items.push(DebugManager);
+
+    WebClient.include({
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        /**
+         * @override
+         */
+        current_action_updated: function (action, controller) {
+            this._super.apply(this, arguments);
+            this.update_debug_manager(action, controller);
+        },
+        update_debug_manager: function(action, controller) {
+            var debugManager = _.find(this.menu.systray_menu.widgets, function(item) {
+                return item instanceof DebugManager;
+            });
+            debugManager.update('action', action, controller && controller.widget);
+        }
+    });
+
+    ActionManager.include({
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        /**
+         * Returns the action of the controller currently opened in a dialog,
+         * i.e. a target='new' action, if any.
+         *
+         * @returns {Object|null}
+         */
+        getCurrentActionInDialog: function () {
+            if (this.currentDialogController) {
+                return this.actions[this.currentDialogController.actionID];
+            }
+            return null;
+        },
+        /**
+         * Returns the controller currently opened in a dialog, if any.
+         *
+         * @returns {Object|null}
+         */
+        getCurrentControllerInDialog: function () {
+            return this.currentDialogController;
+        },
+    });
+
+    Dialog.include({
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        /**
+         * @override
+         */
+        open: function() {
+            var self = this;
+            // if the dialog is opened by the ActionManager, instantiate a
+            // DebugManager and insert it into the DOM once the dialog is opened
+            // (delay this with a setTimeout(0) to ensure that the internal
+            // state, i.e. the current action and controller, of the
+            // ActionManager is set to properly update the DebugManager)
+            this.opened(function() {
+                setTimeout(function () {
+                    var parent = self.getParent();
+                    if (parent instanceof ActionManager) {
+                        var action = parent.getCurrentActionInDialog();
+                        if (action) {
+                            var controller = parent.getCurrentControllerInDialog();
+                            self.debugManager = new DebugManager(self);
+                            var $header = self.$modal.find('.modal-header:first');
+                            return self.debugManager.prependTo($header).then(function () {
+                                self.debugManager.update('action', action, controller.widget);
+                            });
+                        }
+                    }
+                }, 0);
+            });
+
+            return this._super.apply(this, arguments);
+        },
+    });
+}
+
+return DebugManager;
+
+});