From 2996500d9027804358b8e1a0c746ee99425dabe2 Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Thu, 9 Mar 2017 19:31:29 -0700
Subject: [PATCH] Handle double and triple click on lines

---
 spec/text-editor-component-spec.js | 24 ++++++++++++++++++++++--
 src/text-editor-component.js       | 13 +++++++++++--
 2 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/spec/text-editor-component-spec.js b/spec/text-editor-component-spec.js
index cb86207ea..1c2286c9e 100644
--- a/spec/text-editor-component-spec.js
+++ b/spec/text-editor-component-spec.js
@@ -594,9 +594,9 @@ describe('TextEditorComponent', () => {
   })
 
   describe('mouse input', () => {
-    it('positions the cursor on single click', async () => {
+    it('positions the cursor on single-click', async () => {
       const {component, element, editor} = buildComponent()
-      const {lineHeight, baseCharacterWidth} = component.measurements
+      const {lineHeight} = component.measurements
 
       component.didMouseDownOnLines({
         detail: 1,
@@ -643,6 +643,26 @@ describe('TextEditorComponent', () => {
       })
       expect(editor.getCursorScreenPosition()).toEqual([3, 16])
     })
+
+    it('selects words on double-click', () => {
+      const {component, editor} = buildComponent()
+      const clientX = clientLeftForCharacter(component, 1, 16)
+      const clientY = clientTopForLine(component, 1)
+
+      component.didMouseDownOnLines({detail: 1, clientX, clientY})
+      component.didMouseDownOnLines({detail: 2, clientX, clientY})
+      expect(editor.getSelectedScreenRange()).toEqual([[1, 13], [1, 21]])
+    })
+
+    it('selects lines on triple-click', () => {
+      const {component, editor} = buildComponent()
+      const clientX = clientLeftForCharacter(component, 1, 16)
+      const clientY = clientTopForLine(component, 1)
+
+      component.didMouseDownOnLines({detail: 1, clientX, clientY})
+      component.didMouseDownOnLines({detail: 2, clientX, clientY})
+      expect(editor.getSelectedScreenRange()).toEqual([[1, 0], [2, 0]])
+    })
   })
 })
 
diff --git a/src/text-editor-component.js b/src/text-editor-component.js
index 69e03c760..be3857b00 100644
--- a/src/text-editor-component.js
+++ b/src/text-editor-component.js
@@ -736,10 +736,19 @@ class TextEditorComponent {
   }
 
   didMouseDownOnLines (event) {
+    const {model} = this.props
     const screenPosition = this.screenPositionForMouseEvent(event)
 
-    if (event.detail === 1) {
-      this.props.model.setCursorScreenPosition(screenPosition)
+    switch (event.detail) {
+      case 1:
+        model.setCursorScreenPosition(screenPosition)
+        break
+      case 2:
+        model.getLastSelection().selectWord({autoscroll: false})
+        break
+      case 3:
+        model.getLastSelection().selectLine(null, {autoscroll: false})
+        break
     }
   }