Common Scrollable interface

[nikiroo-utils.git] / src / jexer / TTerminalWindow.java

diff --git a/src/jexer/TTerminalWindow.java b/src/jexer/TTerminalWindow.java
index c0af74bafa12ce9046277f0eab0746c7571bee43..17f32e0772db527b54fadc59378263a4e517f340 100644 (file)
--- a/src/jexer/TTerminalWindow.java
+++ b/src/jexer/TTerminalWindow.java
@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (C) 2016 Kevin Lamonte
+ * Copyright (C) 2017 Kevin Lamonte
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -49,7 +49,7 @@ import static jexer.TKeypress.*;
 /**
  * TTerminalWindow exposes a ECMA-48 / ANSI X3.64 style terminal in a window.
  */
-public class TTerminalWindow extends TWindow {
+public class TTerminalWindow extends TScrollableWindow {
 
     /**
      * The emulator.
@@ -61,11 +61,6 @@ public class TTerminalWindow extends TWindow {
      */
     private Process shell;
 
-    /**
-     * Vertical scrollbar.
-     */
-    private TVScroller vScroller;
-
     /**
      * Claim the keystrokes the emulator will need.
      */
@@ -149,6 +144,9 @@ public class TTerminalWindow extends TWindow {
 
         super(application, "Terminal", x, y, 80 + 2, 24 + 2, flags);
 
+        vScroller = new TVScroller(this, getWidth() - 2, 0, getHeight() - 2);
+        setBottomValue(0);
+
         // Assume XTERM
         ECMA48.DeviceType deviceType = ECMA48.DeviceType.XTERM;
 
@@ -166,7 +164,7 @@ public class TTerminalWindow extends TWindow {
                 "script", "-fqe", "/dev/null"
             };
             String [] cmdShellBSD = {
-                "script", "-qe", "-F", "/dev/null"
+                "script", "-q", "-F", "/dev/null"
             };
             // Spawn a shell and pass its I/O to the other constructor.
 
@@ -200,6 +198,9 @@ public class TTerminalWindow extends TWindow {
 
         // Claim the keystrokes the emulator will need.
         addShortcutKeys();
+
+        // Add shortcut text
+        newStatusBar("Terminal session executing...");
     }
 
     /**
@@ -263,6 +264,9 @@ public class TTerminalWindow extends TWindow {
 
         // Claim the keystrokes the emulator will need.
         addShortcutKeys();
+
+        // Add shortcut text
+        newStatusBar("Terminal session executing...");
     }
 
     /**
@@ -275,7 +279,7 @@ public class TTerminalWindow extends TWindow {
         synchronized (emulator) {
 
             // Update the scroll bars
-            reflow();
+            reflowData();
 
             // Draw the box using my superclass
             super.draw();
@@ -286,7 +290,7 @@ public class TTerminalWindow extends TWindow {
             // Put together the visible rows
             int visibleHeight = getHeight() - 2;
             int visibleBottom = scrollback.size() + display.size()
-                + vScroller.getValue();
+                + getVerticalValue();
             assert (visibleBottom >= 0);
 
             List<DisplayLine> preceedingBlankLines = new LinkedList<DisplayLine>();
@@ -358,7 +362,8 @@ public class TTerminalWindow extends TWindow {
     /**
      * Handle window close.
      */
-    @Override public void onClose() {
+    @Override
+    public void onClose() {
         emulator.close();
         if (shell != null) {
             terminateShellChildProcess();
@@ -378,10 +383,8 @@ public class TTerminalWindow extends TWindow {
 
             setCursorX(emulator.getCursorX() + 1);
             setCursorY(emulator.getCursorY() + 1
-                + (getHeight() - 2 - emulator.getHeight()));
-            if (vScroller != null) {
-                setCursorY(getCursorY() - vScroller.getValue());
-            }
+                + (getHeight() - 2 - emulator.getHeight())
+                - getVerticalValue());
             setCursorVisible(emulator.isCursorVisible());
             if (getCursorX() > getWidth() - 2) {
                 setCursorVisible(false);
@@ -406,6 +409,8 @@ public class TTerminalWindow extends TWindow {
                     shell = null;
                     emulator.close();
                     clearShortcutKeypresses();
+                    statusBar.setText("Terminal session completed, exit " +
+                        "code " + rc + ".");
                 } catch (IllegalThreadStateException e) {
                     // The emulator thread has exited, but the shell Process
                     // hasn't figured that out yet.  Do nothing, we will see
@@ -421,6 +426,8 @@ public class TTerminalWindow extends TWindow {
                     shell = null;
                     emulator.close();
                     clearShortcutKeypresses();
+                    statusBar.setText("Terminal session completed, exit " +
+                        "code " + rc + ".");
                 } catch (IllegalThreadStateException e) {
                     // The shell is still running, do nothing.
                 }
@@ -443,10 +450,11 @@ public class TTerminalWindow extends TWindow {
 
             if (resize.getType() == TResizeEvent.Type.WIDGET) {
                 // Resize the scroll bars
-                reflow();
+                reflowData();
+                placeScrollbars();
 
                 // Get out of scrollback
-                vScroller.setValue(0);
+                setVerticalValue(0);
             }
             return;
 
@@ -456,7 +464,8 @@ public class TTerminalWindow extends TWindow {
     /**
      * Resize scrollbars for a new width/height.
      */
-    private void reflow() {
+    @Override
+    public void reflowData() {
 
         // Synchronize against the emulator so we don't stomp on its reader
         // thread.
@@ -466,19 +475,10 @@ public class TTerminalWindow extends TWindow {
             readEmulatorState();
 
             // Vertical scrollbar
-            if (vScroller == null) {
-                vScroller = new TVScroller(this, getWidth() - 2, 0,
-                    getHeight() - 2);
-                vScroller.setBottomValue(0);
-                vScroller.setValue(0);
-            } else {
-                vScroller.setX(getWidth() - 2);
-                vScroller.setHeight(getHeight() - 2);
-            }
-            vScroller.setTopValue(getHeight() - 2
+            setTopValue(getHeight() - 2
                 - (emulator.getScrollbackBuffer().size()
                     + emulator.getDisplayBuffer().size()));
-            vScroller.setBigChange(getHeight() - 2);
+            setVerticalBigChange(getHeight() - 2);
 
         } // synchronized (emulator)
     }
@@ -521,14 +521,14 @@ public class TTerminalWindow extends TWindow {
             || keypress.equals(kbCtrlPgUp)
             || keypress.equals(kbAltPgUp)
         ) {
-            vScroller.bigDecrement();
+            bigVerticalDecrement();
             return;
         }
         if (keypress.equals(kbShiftPgDn)
             || keypress.equals(kbCtrlPgDn)
             || keypress.equals(kbAltPgDn)
         ) {
-            vScroller.bigIncrement();
+            bigVerticalIncrement();
             return;
         }
 
@@ -537,7 +537,7 @@ public class TTerminalWindow extends TWindow {
         synchronized (emulator) {
             if (emulator.isReading()) {
                 // Get out of scrollback
-                vScroller.setValue(0);
+                setVerticalValue(0);
                 emulator.keypress(keypress.getKey());
 
                 // UGLY HACK TIME!  cmd.exe needs CRLF, not just CR, so if
@@ -571,11 +571,11 @@ public class TTerminalWindow extends TWindow {
         }
 
         if (mouse.isMouseWheelUp()) {
-            vScroller.decrement();
+            verticalDecrement();
             return;
         }
         if (mouse.isMouseWheelDown()) {
-            vScroller.increment();
+            verticalIncrement();
             return;
         }
         if (mouseOnEmulator(mouse)) {