feat(keyboard): add select all key binding

Closes #184

lib/features/keyboard/BpmnKeyBindings.js

@@ -1,10 +1,29 @@
 'use strict';
 
+function BpmnKeyBindings(
+    keyboard, spaceTool, lassoTool,
+    directEditing, selection, canvas,
+    elementRegistry) {
 
-function BpmnKeyBindings(keyboard, spaceTool, lassoTool, directEditing, selection) {
 
   keyboard.addListener(function(key, modifiers) {
 
+    // ctrl + a -> select all elements
+    if (key === 65 && keyboard.isCmd(modifiers)) {
+
+      // select all elements except for the invisible
+      // root element
+      var rootElement = canvas.getRootElement();
+
+      var elements = elementRegistry.filter(function(element) {
+        return element != rootElement;
+      });
+
+      selection.select(elements);
+
+      return true;
+    }
+
     if (keyboard.hasModifier(modifiers)) {
       return;
     }
@@ -36,6 +55,14 @@ function BpmnKeyBindings(keyboard, spaceTool, lassoTool, directEditing, selectio
   });
 }
 
-BpmnKeyBindings.$inject = [ 'keyboard', 'spaceTool', 'lassoTool', 'directEditing', 'selection' ];
+BpmnKeyBindings.$inject = [
+  'keyboard',
+  'spaceTool',
+  'lassoTool',
+  'directEditing',
+  'selection',
+  'canvas',
+  'elementRegistry'
+];
 
-module.exports = BpmnKeyBindings;
+module.exports = BpmnKeyBindings;

test/spec/features/keyboard/BpmnKeyBindingsSpec.js

@@ -0,0 +1,125 @@
+'use strict';
+
+var TestHelper = require('../../../TestHelper');
+
+var TestContainer = require('mocha-test-container-support');
+
+var coreModule = require('../../../../lib/core'),
+    modelingModule = require('../../../../lib/features/modeling'),
+    keyboardModule = require('../../../../lib/features/keyboard'),
+    selectionModule = require('diagram-js/lib/features/selection'),
+    spaceToolModule = require('diagram-js/lib/features/space-tool'),
+    lassoToolModule = require('diagram-js/lib/features/lasso-tool');
+
+/* global bootstrapViewer, inject, sinon */
+
+
+function createKeyEvent(element, code, ctrlKey) {
+  var e = document.createEvent('Events');
+
+  if (e.initEvent) {
+    e.initEvent(event, true, true);
+  }
+
+  e.keyCode = code;
+  e.which = code;
+  e.ctrlKey = ctrlKey;
+
+  return e;
+}
+
+
+describe('features - keyboard', function() {
+
+  var diagramXML = require('../../../fixtures/bpmn/simple.bpmn');
+
+  var testModules = [
+    coreModule,
+    modelingModule,
+    selectionModule,
+    spaceToolModule,
+    lassoToolModule,
+    keyboardModule
+  ];
+
+  beforeEach(bootstrapViewer(diagramXML, { modules: testModules }));
+
+  describe('bpmn key bindings', function() {
+
+    var container;
+
+    beforeEach(function() {
+      container = TestContainer.get(this);
+    });
+
+
+    it('should trigger lasso tool', inject(function(keyboard, lassoTool) {
+
+      sinon.spy(lassoTool, 'activateSelection');
+
+      // given
+      var e = createKeyEvent(container, 76, false);
+
+      // when
+      keyboard._keyHandler(e);
+
+      // then
+      expect(lassoTool.activateSelection.calledOnce).to.be.true;
+    }));
+
+
+    it('should trigger space tool', inject(function(keyboard, spaceTool) {
+
+      sinon.spy(spaceTool, 'activateSelection');
+
+      // given
+      var e = createKeyEvent(container, 83, false);
+
+      // when
+      keyboard._keyHandler(e);
+
+      // then
+      expect(spaceTool.activateSelection.calledOnce).to.be.true;
+    }));
+
+
+    it('should trigger direct editing', inject(function(keyboard, selection, elementRegistry, directEditing) {
+
+      sinon.spy(directEditing, 'activate');
+
+      // given
+      var task = elementRegistry.get('Task_1');
+
+      selection.select(task);
+
+      var e = createKeyEvent(container, 69, false);
+
+      // when
+      keyboard._keyHandler(e);
+
+      // then
+      expect(directEditing.activate.calledOnce).to.be.true;
+    }));
+
+
+    it('should select all elements', inject(function(canvas, keyboard, selection, elementRegistry) {
+
+      // given
+      var e = createKeyEvent(container, 65, true);
+
+      var allElements = elementRegistry.getAll(),
+          rootElement = canvas.getRootElement();
+
+      // when
+      keyboard._keyHandler(e);
+
+      // then
+      var selectedElements = selection.get();
+
+      expect(selectedElements).to.have.length.of(allElements.length - 1);
+      expect(selectedElements).not.to.contain(rootElement);
+    }));
+
+  });
+
+});