Complete attribute value after typing '='

platform/platform-resources/src/META-INF/XmlPlugin.xml

@@ -280,6 +280,7 @@
 
 
     <typedHandler implementation="com.intellij.codeInsight.editorActions.XmlSlashTypedHandler" id="xmlSlash"/>
+    <typedHandler implementation="com.intellij.codeInsight.editorActions.XmlEqTypedHandler" id="xmlEq"/>
     <typedHandler implementation="com.intellij.codeInsight.editorActions.XmlGtTypedHandler" id="xmlGt"/>
     <typedHandler implementation="com.intellij.codeInsight.editorActions.XmlAutoPopupHandler" id="xmlAuto"/>
 

xml/impl/src/com/intellij/codeInsight/editorActions/XmlEqTypedHandler.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2000-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.codeInsight.editorActions;
+
+import com.intellij.lang.xml.XMLLanguage;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.fileTypes.FileType;
+import com.intellij.openapi.project.Project;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.xml.XmlAttribute;
+import org.jetbrains.annotations.NotNull;
+
+public class XmlEqTypedHandler extends TypedHandlerDelegate {
+  private boolean needToInsertQuotes = false;
+
+  @Override
+  public Result beforeCharTyped(char c,
+                                Project project,
+                                Editor editor,
+                                PsiFile file,
+                                FileType fileType) {
+    boolean inXml = file.getLanguage() instanceof XMLLanguage || file.getViewProvider().getBaseLanguage() instanceof XMLLanguage;
+    if (c == '=' && inXml) {
+      int offset = editor.getCaretModel().getOffset();
+      PsiElement at = file.findElementAt(offset - 1);
+      PsiElement atParent = at != null ? at.getParent() : null;
+      needToInsertQuotes = atParent instanceof XmlAttribute && ((XmlAttribute)atParent).getValueElement() == null;
+    }
+
+    return super.beforeCharTyped(c, project, editor, file, fileType);
+  }
+
+  @Override
+  public Result charTyped(char c, Project project, Editor editor, @NotNull PsiFile file) {
+    if (needToInsertQuotes) {
+      int offset = editor.getCaretModel().getOffset();
+      editor.getDocument().insertString(offset, "\"\"");
+      editor.getCaretModel().moveToOffset(offset + 1);
+    }
+    needToInsertQuotes = false;
+    return super.charTyped(c, project, editor, file);
+  }
+}