Add "Format As XML" Command

This command can be invoked from any document, regardless of what
language is selected. It supports selection-only formatting as well.

closes #97

package.json

@@ -49,6 +49,10 @@
             {
                 "command": "xmlTools.viewXmlTree",
                 "title": "XML Tools: View XML Tree"
+            },
+            {
+                "command": "xmlTools.formatAsXml",
+                "title": "XML Tools: Format as XML"
             }
 		],
         "configuration": {
@@ -120,7 +124,8 @@
         "onCommand:xmlTools.minifyXml",
         "onCommand:xmlTools.evaluateXPath",
         "onCommand:xmlTools.executeXQuery",
-        "onCommand:xmlTools.viewXmlTree"
+        "onCommand:xmlTools.viewXmlTree",
+        "onCommand:xmlTools.formatAsXml"
 	],
 	"devDependencies": {
 		"vscode": "^0.11.8",

src/Commands.ts

@@ -8,6 +8,7 @@ import { XmlFormatter } from './services/XmlFormatter';
 import { XPathFeatureProvider } from './providers/XPath';
 import { XQueryExecutionProvider } from './providers/Execution';
 import { XmlTreeDocumentContentProvider } from './providers/Content';
+import { XmlFormattingEditProvider } from './providers/Formatting';
 
 const CFG_SECTION: string = 'xmlTools';
 const CFG_REMOVE_COMMENTS: string = 'removeCommentsOnMinify';
@@ -44,4 +45,41 @@ export class TextEditorCommands {
             vsc.window.showErrorMessage(`The XML Tree could not be created: ${error}`);
         }
     }
+
+    static formatAsXml(editor: vsc.TextEditor, edit: vsc.TextEditorEdit): void {
+        let edits: vsc.TextEdit[];
+        let formattingEditProvider = new XmlFormattingEditProvider();
+        let formattingOptions: vsc.FormattingOptions = {
+            insertSpaces: editor.options.insertSpaces,
+            tabSize: editor.options.tabSize
+        };
+        
+        // if the user has selected text, only format what is selected
+        // otherwise, attempt to format the entire document
+        if (!editor.selection.isEmpty) {
+            edits = formattingEditProvider.provideDocumentRangeFormattingEdits(editor.document, editor.selection, formattingOptions); 
+        }
+
+        else {
+            edits = formattingEditProvider.provideDocumentFormattingEdits(editor.document, formattingOptions);
+        }
+
+        if (edits) {
+            for (let i = 0; i < edits.length; i++) {
+                editor.edit(async (editBuilder) => {
+                    editBuilder.replace(edits[i].range, edits[i].newText);
+
+                    // wiggle the cursor to deselect the formatted XML (is there a non-hacky way to go about this?)
+                    await vsc.commands.executeCommand('cursorMove', {
+                        to: 'left',
+                        by: 'character'
+                    });
+                    await vsc.commands.executeCommand('cursorMove', {
+                        to: 'right',
+                        by: 'character'
+                    });
+                });
+            }
+        }
+    }
 }

src/Extension.ts

@@ -26,7 +26,8 @@ export function activate(ctx: vsc.ExtensionContext) {
         vsc.commands.registerTextEditorCommand('xmlTools.minifyXml', TextEditorCommands.minifyXml),
         vsc.commands.registerTextEditorCommand('xmlTools.evaluateXPath', TextEditorCommands.evaluateXPath),
         vsc.commands.registerTextEditorCommand('xmlTools.executeXQuery', TextEditorCommands.executeXQuery),
-        vsc.commands.registerTextEditorCommand('xmlTools.viewXmlTree', TextEditorCommands.viewXmlTree)
+        vsc.commands.registerTextEditorCommand('xmlTools.viewXmlTree', TextEditorCommands.viewXmlTree),
+        vsc.commands.registerTextEditorCommand('xmlTools.formatAsXml', TextEditorCommands.formatAsXml)
     );
 	
 	// register language feature providers