retrofit from XtermWM

src/jexer/TApplication.java

@@ -3982,6 +3982,9 @@ public class TApplication implements Runnable {
     public final TTerminalWindow openTerminal(final int x, final int y,
         final int flags, final String [] command) {
 
+        if (command.length == 0) {
+            return new TTerminalWindow(this, x, y, flags);
+        }
         return new TTerminalWindow(this, x, y, flags, command);
     }
 

src/jexer/TSplitPane.java

@@ -647,6 +647,45 @@ public class TSplitPane extends TWidget {
         }
     }
 
+    /**
+     * Get whether or not this is a vertical split.
+     *
+     * @return if true, this is a vertical split
+     */
+    public boolean isVertical() {
+        return vertical;
+    }
+
+    /**
+     * Get whether or not this is a horizontal split.
+     *
+     * @return if true, this is a horizontal split
+     */
+    public boolean isHorizontal() {
+        return !vertical;
+    }
+
+    /**
+     * Get the split location.
+     *
+     * @return the row of the divider for a horizontal, or the column for a
+     * vertical split
+     */
+    public int getSplit() {
+        return split;
+    }
+
+    /**
+     * Set the split location.
+     *
+     * @param split the row of the divider for a horizontal, or the column
+     * for a vertical split
+     */
+    public void setSplit(final int split) {
+        this.split = split;
+        layoutChildren();
+    }
+
     /**
      * Recenter the split to the middle of this split pane.
      */

src/jexer/TTerminalWidget.java

@@ -241,6 +241,10 @@ public class TTerminalWidget extends TScrollableWidget
 
         this.closeAction = closeAction;
 
+        // Save the external command line that can be used to recreate this
+        // terminal, not the fully-processed command line.
+        commandLine = command;
+
         String [] fullCommand;
 
         // Spawn a shell and pass its I/O to the other constructor.
@@ -348,6 +352,9 @@ public class TTerminalWidget extends TScrollableWidget
             return;
         }
 
+        // Save an empty command line.
+        commandLine = new String[0];
+
         String cmdShellWindows = "cmd.exe";
 
         // You cannot run a login shell in a bare Process interactively, due
@@ -937,9 +944,6 @@ public class TTerminalWidget extends TScrollableWidget
      * @param command the command line to execute
      */
     private void spawnShell(final String [] command) {
-
-        commandLine = command;
-
         /*
         System.err.printf("spawnShell(): '%s'\n",
             stringArrayToString(command));

src/jexer/TWindow.java

@@ -1194,6 +1194,24 @@ public class TWindow extends TWidget {
         }
     }
 
+    /**
+     * Move the window as needed to ensure it is visible on screen.
+     */
+    public void ensureOnScreen() {
+        if (getX() < 0) {
+            setX(0);
+        }
+        if (getY() < getApplication().getDesktopTop()) {
+            setY(getApplication().getDesktopTop());
+        }
+        while (getX() + getWidth() > getScreen().getWidth()) {
+            setX(getX() - 1);
+        }
+        while (getY() + getHeight() > getApplication().getDesktopBottom()) {
+            setY(getY() - 1);
+        }
+    }
+
     /**
      * Maximize window.
      */

src/jexer/bits/Cell.java

@@ -390,7 +390,7 @@ public class Cell extends CellAttributes {
             // Either both objects have their image inverted, or neither do.
             // Now if the images are identical the cells are the same
             // visually.
-            if (image.equals(that.image)
+            if ((imageHashCode == that.imageHashCode)
                 && (background.equals(that.background))
             ) {
                 return true;