1 files changed, 201 insertions, 0 deletions
diff --git a/app/src/main/java/org/connectbot/bean/SelectionArea.java b/app/src/main/java/org/connectbot/bean/SelectionArea.java
new file mode 100644
index 0000000..4e6207d
--- /dev/null
+++ b/app/src/main/java/org/connectbot/bean/SelectionArea.java
@@ -0,0 +1,201 @@
+/*
+ * ConnectBot: simple, powerful, open-source SSH client for Android
+ * Copyright 2007 Kenny Root, Jeffrey Sharkey
+ *
+ * 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 org.connectbot.bean;
+
+import de.mud.terminal.VDUBuffer;
+
+/**
+ * @author Kenny Root
+ * Keep track of a selection area for the terminal copying mechanism.
+ * If the orientation is flipped one way, swap the bottom and top or
+ * left and right to keep it in the correct orientation.
+ */
+public class SelectionArea {
+	private int top;
+	private int bottom;
+	private int left;
+	private int right;
+	private int maxColumns;
+	private int maxRows;
+	private boolean selectingOrigin;
+
+	public SelectionArea() {
+		reset();
+	}
+
+	public final void reset() {
+		top = left = bottom = right = 0;
+		selectingOrigin = true;
+	}
+
+	/**
+	 * @param columns
+	 * @param rows
+	 */
+	public void setBounds(int columns, int rows) {
+		maxColumns = columns - 1;
+		maxRows = rows - 1;
+	}
+
+	private int checkBounds(int value, int max) {
+		if (value < 0)
+			return 0;
+		else if (value > max)
+			return max;
+		else
+			return value;
+	}
+
+	public boolean isSelectingOrigin() {
+		return selectingOrigin;
+	}
+
+	public void finishSelectingOrigin() {
+		selectingOrigin = false;
+	}
+
+	public void decrementRow() {
+		if (selectingOrigin)
+			setTop(top - 1);
+		else
+			setBottom(bottom - 1);
+	}
+
+	public void incrementRow() {
+		if (selectingOrigin)
+			setTop(top + 1);
+		else
+			setBottom(bottom + 1);
+	}
+
+	public void setRow(int row) {
+		if (selectingOrigin)
+			setTop(row);
+		else
+			setBottom(row);
+	}
+
+	private void setTop(int top) {
+		this.top = bottom = checkBounds(top, maxRows);
+	}
+
+	public int getTop() {
+		return Math.min(top, bottom);
+	}
+
+	private void setBottom(int bottom) {
+		this.bottom = checkBounds(bottom, maxRows);
+	}
+
+	public int getBottom() {
+		return Math.max(top, bottom);
+	}
+
+	public void decrementColumn() {
+		if (selectingOrigin)
+			setLeft(left - 1);
+		else
+			setRight(right - 1);
+	}
+
+	public void incrementColumn() {
+		if (selectingOrigin)
+			setLeft(left + 1);
+		else
+			setRight(right + 1);
+	}
+
+	public void setColumn(int column) {
+		if (selectingOrigin)
+			setLeft(column);
+		else
+			setRight(column);
+	}
+
+	private void setLeft(int left) {
+		this.left = right = checkBounds(left, maxColumns);
+	}
+
+	public int getLeft() {
+		return Math.min(left, right);
+	}
+
+	private void setRight(int right) {
+		this.right = checkBounds(right, maxColumns);
+	}
+
+	public int getRight() {
+		return Math.max(left, right);
+	}
+
+	public String copyFrom(VDUBuffer vb) {
+		int size = (getRight() - getLeft() + 1) * (getBottom() - getTop() + 1);
+
+		StringBuffer buffer = new StringBuffer(size);
+
+		for(int y = getTop(); y <= getBottom(); y++) {
+			int lastNonSpace = buffer.length();
+
+			for (int x = getLeft(); x <= getRight(); x++) {
+				// only copy printable chars
+				char c = vb.getChar(x, y);
+
+				if (!Character.isDefined(c) ||
+						(Character.isISOControl(c) && c != '\t'))
+					c = ' ';
+
+				if (c != ' ')
+					lastNonSpace = buffer.length();
+
+				buffer.append(c);
+			}
+
+			// Don't leave a bunch of spaces in our copy buffer.
+			if (buffer.length() > lastNonSpace)
+				buffer.delete(lastNonSpace + 1, buffer.length());
+
+			if (y != bottom)
+				buffer.append("\n");
+		}
+
+		return buffer.toString();
+	}
+
+	@Override
+	public String toString() {
+		StringBuilder buffer = new StringBuilder();
+
+		buffer.append("SelectionArea[top=");
+		buffer.append(top);
+		buffer.append(", bottom=");
+		buffer.append(bottom);
+		buffer.append(", left=");
+		buffer.append(left);
+		buffer.append(", right=");
+		buffer.append(right);
+		buffer.append(", maxColumns=");
+		buffer.append(maxColumns);
+		buffer.append(", maxRows=");
+		buffer.append(maxRows);
+		buffer.append(", isSelectingOrigin=");
+		buffer.append(isSelectingOrigin());
+		buffer.append("]");
+
+		return buffer.toString();
+	}
+}