Move trim handling to IRCDocument.

Change-Id: Ifdb80c4888932f7e0d169db9756edb85c23faa3d
Reviewed-on: http://gerrit.dmdirc.com/1094
Automatic-Compile: Chris Smith <chris@dmdirc.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

src/com/dmdirc/addons/ui_swing/components/frames/TextFrame.java

 import com.dmdirc.ui.core.util.URLHandler;
 import com.dmdirc.ui.interfaces.InputWindow;
 import com.dmdirc.ui.interfaces.Window;
-import com.dmdirc.ui.messages.Formatter;
 
 import java.awt.Container;
 import java.awt.Dimension;
 import java.nio.charset.Charset;
 import java.nio.charset.IllegalCharsetNameException;
 import java.nio.charset.UnsupportedCharsetException;
-import java.util.Date;
-import java.util.LinkedList;
-import java.util.List;
 import java.util.concurrent.atomic.AtomicBoolean;
 import javax.swing.BorderFactory;
 import javax.swing.JComponent;
     private SwingSearchBar searchBar;
     /** String transcoder. */
     private StringTranscoder transcoder;
-    /** Frame buffer size. */
-    private int frameBufferSize;
     /** Are we closing? */
     private boolean closing = false;
     /** Input window for popup commands. */
         frameParent = owner;
 
         final ConfigManager config = owner.getConfigManager();
-        frameBufferSize = config.getOptionInt("ui", "frameBufferSize");
 
         setFrameIcon(IconManager.getIconManager().getIcon(owner.getIcon()));
 
                     != null) {
                 getTextPane().setBackground(getConfigManager().
                         getOptionColour("ui", "backgroundcolour"));
-            } else if ("frameBufferSize".equals(key)) {
-                frameBufferSize = getContainer().getConfigManager().
-                        getOptionInt("ui", "frameBufferSize");
             }
         }
     }

src/com/dmdirc/addons/ui_swing/textpane/TextPane.java

         canvas.clearSelection();
     }
 
-    /**
-     * Trims the document to the specified number of lines.
-     *
-     * @param numLines Number of lines to trim the document to
-     */
-    public void trim(final int numLines) {
-        if (document.getNumLines() < numLines) {
-            return;
-        }
-        final int trimmedLines = document.getNumLines() - numLines;
-        final LinePosition selectedRange = getSelectedRange();
-
-        selectedRange.setStartLine(selectedRange.getStartLine() - trimmedLines);
-        selectedRange.setEndLine(selectedRange.getEndLine() - trimmedLines);
-
-        if (selectedRange.getStartLine() < 0) {
-            selectedRange.setStartLine(0);
-        }
-        if (selectedRange.getEndLine() < 0) {
-            selectedRange.setEndLine(0);
-        }
-
-        setSelectedTexT(selectedRange);
-        document.trim(numLines);
-    }
-
     /** Scrolls one page up in the textpane. */
     public void pageDown() {
         scrollModel.setValue(scrollModel.getValue() + 10);
 
     /** {@inheritDoc}. */
     @Override
-    public void trimmed(final int numLines) {
+    public void trimmed(final int newSize, final int numTrimmed) {
+        final LinePosition selectedRange = getSelectedRange();
+
+        selectedRange.setStartLine(selectedRange.getStartLine() - numTrimmed);
+        selectedRange.setEndLine(selectedRange.getEndLine() - numTrimmed);
+
+        if (selectedRange.getStartLine() < 0) {
+            selectedRange.setStartLine(0);
+        }
+        if (selectedRange.getEndLine() < 0) {
+            selectedRange.setEndLine(0);
+        }
+
+        setSelectedTexT(selectedRange);
+        
         setScrollBarMax(1);
     }