Add support for configuring which column devdocs displays in

README.md

@@ -24,6 +24,18 @@ The extension has no control over DevDocs. For best user experience, you should
 
 For further information, please refer to [DevDocs Help](http://devdocs.io/help).
 
+## Extension Settings
+
+This extension contributes the following setting:
+
+```json
+"devdocs.column": {
+    "type": "number",
+    "default": 2,
+    "description": "A number which indicates which column (1, 2, or 3) to display DevDocs in"
+}
+```
+
 ## Known Issues
 
 * Document list in `devdocs.settings` page might be buggy (lose scroll position on first click)

package.json

@@ -54,6 +54,18 @@
                 }
             ]
         },
+        "configuration": {
+            "title": "DevDocs: Configuration",
+            "properties": {
+                "devdocs.column": {
+                    "type": "number",
+                    "minimum": 1,
+                    "maximum": 3,
+                    "default": 2,
+                    "description": "A number which indicates which column (1, 2, or 3) to display DevDocs in"
+                }
+            }
+        },
         "keybindings": [
             {
                 "key": "alt+shift+d",

src/extension.ts

@@ -12,8 +12,15 @@ export function activate(context: vscode.ExtensionContext) {
     let devdocs = new DevDocsContentProvider()
     let registration = vscode.workspace.registerTextDocumentContentProvider(SCHEME, devdocs)
 
+    const getColumn = () => {
+        const column = vscode.workspace.getConfiguration('devdocs').get<number>('column');
+        return column < 1 || column > 3
+            ? vscode.ViewColumn.Two
+            : <vscode.ViewColumn>column
+    }
+
     const openHtml = (uri: vscode.Uri, title) => {
-        return vscode.commands.executeCommand('vscode.previewHtml', uri, vscode.ViewColumn.Two, title)
+        return vscode.commands.executeCommand('vscode.previewHtml', uri, getColumn(), title)
             .then((success) => {
             }, (reason) => {
                 vscode.window.showErrorMessage(reason)