grid: repeat refactoring and unit tests

public/app/core/constants.ts

@@ -2,5 +2,6 @@
 export const GRID_CELL_HEIGHT = 20;
 export const GRID_CELL_VMARGIN = 10;
 export const GRID_COLUMN_COUNT = 24;
+export const REPEAT_DIR_VERTICAL = 'v';
 
 

public/app/features/dashboard/dashboard_model.ts

 import moment from 'moment';
 import _ from 'lodash';
 
-import {GRID_COLUMN_COUNT, GRID_CELL_HEIGHT} from 'app/core/constants';
+import {GRID_COLUMN_COUNT, GRID_CELL_HEIGHT, REPEAT_DIR_VERTICAL} from 'app/core/constants';
 import {DEFAULT_ANNOTATION_COLOR} from 'app/core/utils/colors';
 import {Emitter, contextSrv} from 'app/core/core';
 import sortByKeys from 'app/core/utils/sort_by_keys';
@@ -283,6 +283,9 @@ export class DashboardModel {
       selected = _.filter(variable.options, {selected: true});
     }
 
+    let minWidth = panel.minSpan || 6;
+    let xIndex = 0;
+
     for (let index = 0; index < selected.length; index++) {
       var option = selected[index];
       var copy = this.getRepeatClone(panel, index);
@@ -290,15 +293,26 @@ export class DashboardModel {
       copy.scopedVars = {};
       copy.scopedVars[variable.name] = option;
 
-      // souce panel uses original possition
+      if (panel.repeatDirection === REPEAT_DIR_VERTICAL) {
         if (index === 0) {
           continue;
         }
 
-      if (panel.repeatDirection === 'Y') {
         copy.gridPos.y = panel.gridPos.y + panel.gridPos.h * index;
       } else {
-        copy.gridPos.x = panel.gridPos.x + panel.gridPos.w * index;
+        // set width based on how many are selected
+        // assumed the repeated panels should take up full row width
+
+        copy.gridPos.w = Math.max(GRID_COLUMN_COUNT / selected.length, minWidth);
+        copy.gridPos.x = copy.gridPos.w * xIndex;
+
+        // handle overflow by pushing down one row
+        if (copy.gridPos.x + copy.gridPos.w > GRID_COLUMN_COUNT) {
+          copy.gridPos.x = 0;
+          xIndex = 0;
+        } else {
+          xIndex += 1;
+        }
       }
     }
   }

public/app/features/dashboard/folder_modal/folder.ts

-///<reference path="../../../headers/common.d.ts" />
-
 import coreModule from 'app/core/core_module';
 import appEvents from 'app/core/app_events';
 

public/app/features/dashboard/panel_model.ts

@@ -21,10 +21,11 @@ export class PanelModel {
   title: string;
   alert?: any;
   scopedVars?: any;
-  repeat?: any;
-  repeatIteration?: any;
-  repeatPanelId?: any;
-  repeatDirection?: any;
+  repeat?: string;
+  repeatIteration?: number;
+  repeatPanelId?: number;
+  repeatDirection?: string;
+  minSpan?: number;
 
   // non persisted
   fullscreen: boolean;

public/app/features/dashboard/specs/dashboard_model_specs.ts

@@ -416,12 +416,12 @@ describe('DashboardModel', function() {
     });
   });
 
-  describe('given dashboard with panel repeat', function(ctx) {
+  describe('given dashboard with panel repeat in horizontal direction', function(ctx) {
     var dashboard;
 
     beforeEach(function() {
       dashboard = new DashboardModel({
-        panels: [{id: 2, repeat: 'apps'}],
+        panels: [{id: 2, repeat: 'apps', repeatDirection: 'h', gridPos: {x: 0, y: 0, h: 2, w: 24}}],
         templating:  {
           list: [{
             name: 'apps',
@@ -456,6 +456,12 @@ describe('DashboardModel', function() {
       expect(dashboard.panels[2].scopedVars.apps.value).to.be('se3');
     });
 
+    it('should place on first row and adjust width so all fit', function() {
+      expect(dashboard.panels[0].gridPos).to.eql({x: 0, y: 0, h: 2, w: 8});
+      expect(dashboard.panels[1].gridPos).to.eql({x: 8, y: 0, h: 2, w: 8});
+      expect(dashboard.panels[2].gridPos).to.eql({x: 16, y: 0, h: 2, w: 8});
+    });
+
     describe('After a second iteration', function() {
       var repeatedPanelAfterIteration1;
 
@@ -522,4 +528,36 @@ describe('DashboardModel', function() {
 
   });
 
+  describe('given dashboard with panel repeat in vertical direction', function(ctx) {
+    var dashboard;
+
+    beforeEach(function() {
+      dashboard = new DashboardModel({
+        panels: [{id: 2, repeat: 'apps', repeatDirection: 'v', gridPos: {x: 5, y: 0, h: 2, w: 8}}],
+        templating:  {
+          list: [{
+            name: 'apps',
+            current: {
+              text: 'se1, se2, se3',
+              value: ['se1', 'se2', 'se3']
+            },
+            options: [
+              {text: 'se1', value: 'se1', selected: true},
+              {text: 'se2', value: 'se2', selected: true},
+              {text: 'se3', value: 'se3', selected: true},
+              {text: 'se4', value: 'se4', selected: false}
+            ]
+          }]
+        }
+      });
+      dashboard.processRepeats();
+    });
+
+    it('should place on items on top of each other and keep witdh', function() {
+      expect(dashboard.panels[0].gridPos).to.eql({x: 5, y: 0, h: 2, w: 8});
+      expect(dashboard.panels[1].gridPos).to.eql({x: 5, y: 2, h: 2, w: 8});
+      expect(dashboard.panels[2].gridPos).to.eql({x: 5, y: 4, h: 2, w: 8});
+    });
+  });
+
 });