#29 avoid potential NPE

[nikiroo-utils.git] / src / jexer / demos / DesktopDemoApplication.java

diff --git a/src/jexer/demos/DesktopDemoApplication.java b/src/jexer/demos/DesktopDemoApplication.java
index 2a2ca34cbf7719cf224c0f7aaf305273beb0ddb8..0393860a3b0addfebf0e3b25004d70ca31c2b7aa 100644 (file)
--- a/src/jexer/demos/DesktopDemoApplication.java
+++ b/src/jexer/demos/DesktopDemoApplication.java
@@ -40,6 +40,71 @@ import jexer.menu.*;
  */
 public class DesktopDemoApplication extends TApplication {
 
+    // ------------------------------------------------------------------------
+    // Constructors -----------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Public constructor.
+     *
+     * @param backendType one of the TApplication.BackendType values
+     * @throws Exception if TApplication can't instantiate the Backend.
+     */
+    public DesktopDemoApplication(final BackendType backendType) throws Exception {
+        super(backendType);
+        addAllWidgets();
+        getBackend().setTitle("Jexer Demo Application");
+    }
+
+    // ------------------------------------------------------------------------
+    // TApplication -----------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Handle menu events.
+     *
+     * @param menu menu event
+     * @return if true, the event was processed and should not be passed onto
+     * a window
+     */
+    @Override
+    public boolean onMenu(final TMenuEvent menu) {
+
+        if (menu.getId() == TMenu.MID_OPEN_FILE) {
+            try {
+                String filename = fileOpenBox(".");
+                 if (filename != null) {
+                     try {
+                         File file = new File(filename);
+                         StringBuilder fileContents = new StringBuilder();
+                         Scanner scanner = new Scanner(file);
+                         String EOL = System.getProperty("line.separator");
+
+                         try {
+                             while (scanner.hasNextLine()) {
+                                 fileContents.append(scanner.nextLine() + EOL);
+                             }
+                             new DemoTextWindow(this, filename,
+                                 fileContents.toString());
+                         } finally {
+                             scanner.close();
+                         }
+                     } catch (IOException e) {
+                         e.printStackTrace();
+                     }
+                 }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            return true;
+        }
+        return super.onMenu(menu);
+    }
+
+    // ------------------------------------------------------------------------
+    // DesktopDemoApplication -------------------------------------------------
+    // ------------------------------------------------------------------------
+
     /**
      * Add all the widgets of the demo.
      */
@@ -69,8 +134,8 @@ public class DesktopDemoApplication extends TApplication {
             }
         );
 
-        final TWindow windowA = addWindow("Window A", 20, 14);
-        final TWindow windowB = addWindow("Window B", 20, 14);
+        final TWindow windowA = addWindow("Window A", 25, 14);
+        final TWindow windowB = addWindow("Window B", 25, 14);
         windowA.addButton("&Show Window B", 2, 2,
             new TAction() {
                 public void DO() {
@@ -85,6 +150,20 @@ public class DesktopDemoApplication extends TApplication {
                 }
             }
         );
+        windowA.addButton("&Maximize Window B", 2, 6,
+            new TAction() {
+                public void DO() {
+                    windowB.maximize();
+                }
+            }
+        );
+        windowA.addButton("&Restore Window B", 2, 8,
+            new TAction() {
+                public void DO() {
+                    windowB.restore();
+                }
+            }
+        );
         windowB.addButton("&Show Window A", 2, 2,
             new TAction() {
                 public void DO() {
@@ -99,8 +178,22 @@ public class DesktopDemoApplication extends TApplication {
                 }
             }
         );
+        windowB.addButton("&Maximize Window A", 2, 6,
+            new TAction() {
+                public void DO() {
+                    windowA.maximize();
+                }
+            }
+        );
+        windowB.addButton("&Restore Window A", 2, 8,
+            new TAction() {
+                public void DO() {
+                    windowA.restore();
+                }
+            }
+        );
 
-        desktop.addButton("&Show Window B", 25, 2,
+        desktop.addButton("S&how Window B", 25, 2,
             new TAction() {
                 public void DO() {
                     windowB.show();
@@ -128,60 +221,37 @@ public class DesktopDemoApplication extends TApplication {
                 }
             }
         );
+        desktop.addButton("&Create Window C", 25, 15,
+            new TAction() {
+                public void DO() {
+                    final TWindow windowC = desktop.getApplication().addWindow(
+                        "Window C", 30, 20, TWindow.NOCLOSEBOX);
+                    windowC.addButton("&Close Me", 5, 5,
+                        new TAction() {
+                            public void DO() {
+                                windowC.close();
+                            }
+                        }
+                    );
+                }
+            }
+        );
 
-
-    }
-
-    /**
-     * Handle menu events.
-     *
-     * @param menu menu event
-     * @return if true, the event was processed and should not be passed onto
-     * a window
-     */
-    @Override
-    public boolean onMenu(final TMenuEvent menu) {
-
-        if (menu.getId() == TMenu.MID_OPEN_FILE) {
-            try {
-                String filename = fileOpenBox(".");
-                 if (filename != null) {
-                     try {
-                         File file = new File(filename);
-                         StringBuilder fileContents = new StringBuilder();
-                         Scanner scanner = new Scanner(file);
-                         String EOL = System.getProperty("line.separator");
-
-                         try {
-                             while (scanner.hasNextLine()) {
-                                 fileContents.append(scanner.nextLine() + EOL);
-                             }
-                             new DemoTextWindow(this, filename,
-                                 fileContents.toString());
-                         } finally {
-                             scanner.close();
-                         }
-                     } catch (IOException e) {
-                         e.printStackTrace();
-                     }
-                 }
-            } catch (IOException e) {
-                e.printStackTrace();
+        desktop.addButton("Enable focusFollowsMouse", 25, 18,
+            new TAction() {
+                public void DO() {
+                    DesktopDemoApplication.this.setFocusFollowsMouse(true);
+                }
             }
-            return true;
-        }
-        return super.onMenu(menu);
-    }
+        );
+        desktop.addButton("Disable focusFollowsMouse", 25, 21,
+            new TAction() {
+                public void DO() {
+                    DesktopDemoApplication.this.setFocusFollowsMouse(false);
+                }
+            }
+        );
 
-    /**
-     * Public constructor.
-     *
-     * @param backendType one of the TApplication.BackendType values
-     * @throws Exception if TApplication can't instantiate the Backend.
-     */
-    public DesktopDemoApplication(final BackendType backendType) throws Exception {
-        super(backendType);
-        addAllWidgets();
-        getBackend().setTitle("Jexer Demo Application");
     }
+
 }