customize welcome screen

platform/platform-api/src/com/intellij/openapi/wm/WelcomeScreen.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2000-2012 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.openapi.wm;
+
+import com.intellij.openapi.Disposable;
+
+import javax.swing.*;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public interface WelcomeScreen extends Disposable {
+  JComponent getWelcomePanel();
+}

platform/platform-api/src/com/intellij/openapi/wm/WelcomeScreenProvider.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2000-2012 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.openapi.wm;
+
+import com.intellij.openapi.extensions.ExtensionPointName;
+import org.jetbrains.annotations.Nullable;
+
+import javax.swing.*;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public interface WelcomeScreenProvider {
+  ExtensionPointName<WelcomeScreenProvider> EP_NAME = ExtensionPointName.create("com.intellij.welcomeScreen");
+
+  @Nullable
+  WelcomeScreen createWelcomeScreen(JRootPane rootPane);
+}

platform/platform-impl/src/com/intellij/ide/RecentProjectsManagerBase.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2009 JetBrains s.r.o.
+ * Copyright 2000-2012 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.
@@ -32,8 +32,9 @@ import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.wm.IdeFrame;
+import com.intellij.openapi.wm.WelcomeScreen;
 import com.intellij.openapi.wm.impl.IdeRootPane;
-import com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen;
+import com.intellij.openapi.wm.impl.welcomeScreen.DefaultWelcomeScreen;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.messages.MessageBus;
 import org.jetbrains.annotations.NotNull;
@@ -214,9 +215,9 @@ public abstract class RecentProjectsManagerBase implements PersistentStateCompon
             IdeFrame frame = e.getData(IdeFrame.KEY);
             if (frame != null) {
               IdeRootPane rootPane = (IdeRootPane) frame.getComponent();
-              WelcomeScreen welcomeScreen = rootPane.getWelcomeScreen();
-              if (welcomeScreen != null) {
-                welcomeScreen.hideRecentProjectsPanel();
+              final WelcomeScreen welcomeScreen = rootPane.getWelcomeScreen();
+              if (welcomeScreen instanceof DefaultWelcomeScreen) {
+                ((DefaultWelcomeScreen)welcomeScreen).hideRecentProjectsPanel();
               }
             }
           }

platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeRootPane.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2009 JetBrains s.r.o.
+ * Copyright 2000-2012 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.
@@ -41,7 +41,7 @@ import com.intellij.openapi.util.SystemInfo;
 import com.intellij.openapi.wm.*;
 import com.intellij.openapi.wm.impl.status.IdeStatusBarImpl;
 import com.intellij.openapi.wm.impl.status.MemoryUsagePanel;
-import com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen;
+import com.intellij.openapi.wm.impl.welcomeScreen.DefaultWelcomeScreen;
 import com.intellij.ui.PopupHandler;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.messages.MessageBusConnection;
@@ -81,7 +81,7 @@ public class IdeRootPane extends JRootPane implements UISettingsListener {
   private final UISettings myUISettings;
 
   private WelcomeScreen myWelcomeScreen;
-  private Component myWelcomePane;
+  private JComponent myWelcomePane;
   private final boolean myGlassPaneInitialized;
   private final IdeGlassPaneImpl myGlassPane;
 
@@ -129,7 +129,13 @@ public class IdeRootPane extends JRootPane implements UISettingsListener {
   }
 
   void showWelcomeScreen() {
-    myWelcomeScreen = new WelcomeScreen(this);
+    for (WelcomeScreenProvider provider : WelcomeScreenProvider.EP_NAME.getExtensions()) {
+      myWelcomeScreen = provider.createWelcomeScreen(this);
+      if (myWelcomeScreen != null) break;
+    }
+    if (myWelcomeScreen == null) {
+      myWelcomeScreen = new DefaultWelcomeScreen(this);
+    }
     Disposer.register(myDisposable, myWelcomeScreen);
     myWelcomePane = myWelcomeScreen.getWelcomePanel();
     myContentPane.add(myWelcomePane);

platform/platform-impl/src/com/intellij/openapi/wm/impl/welcomeScreen/DefaultWelcomeScreen.java

@@ -22,7 +22,6 @@ import com.intellij.ide.ReopenProjectAction;
 import com.intellij.ide.dnd.FileCopyPasteUtil;
 import com.intellij.ide.highlighter.ProjectFileType;
 import com.intellij.ide.plugins.*;
-import com.intellij.openapi.Disposable;
 import com.intellij.openapi.actionSystem.*;
 import com.intellij.openapi.actionSystem.ex.ActionButtonLook;
 import com.intellij.openapi.actionSystem.impl.PresentationFactory;
@@ -34,6 +33,7 @@ import com.intellij.openapi.ui.Messages;
 import com.intellij.openapi.util.IconLoader;
 import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.openapi.wm.WelcomeScreen;
 import com.intellij.openapi.wm.impl.IdeRootPane;
 import com.intellij.ui.*;
 import com.intellij.util.containers.ContainerUtil;
@@ -57,7 +57,7 @@ import static java.awt.GridBagConstraints.*;
 /**
  * @author pti
  */
-public class WelcomeScreen implements Disposable {
+public class DefaultWelcomeScreen implements WelcomeScreen {
   private static final Insets ACTION_GROUP_CAPTION_INSETS = new Insets(20, 30, 5, 0);
   private static final Insets PLUGINS_CAPTION_INSETS = new Insets(20, 25, 0, 0);
   private static final Insets ACTION_ICON_INSETS = new Insets(5, 20, 15, 0);
@@ -122,7 +122,7 @@ public class WelcomeScreen implements Disposable {
     return myWelcomePanel;
   }
 
-  public WelcomeScreen(IdeRootPane rootPane) {
+  public DefaultWelcomeScreen(IdeRootPane rootPane) {
     initApplicationSpecificImages();
 
     myWelcomePanel = new JPanel(new GridBagLayout());

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

@@ -98,6 +98,7 @@
   <extensionPoint name="bundledKeymapProvider" interface="com.intellij.openapi.keymap.impl.BundledKeymapProvider"/>
 
   <extensionPoint name="toolWindow" beanClass="com.intellij.openapi.wm.ToolWindowEP"/>
+  <extensionPoint name="welcomeScreen" interface="com.intellij.openapi.wm.WelcomeScreenProvider"/>
 
   <extensionPoint name="productivityFeaturesProvider" interface="com.intellij.featureStatistics.ProductivityFeaturesProvider"/>