/*
* InputEditorSelection.java
*
* Copyright (C) 2009-12 by RStudio, Inc.
*
* Unless you have received this program directly from RStudio pursuant
* to the terms of a commercial license agreement with RStudio, then
* this program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
package org.rstudio.studio.client.workbench.views.console.shell.editor;
public final class InputEditorSelection
implements Comparable<InputEditorSelection>
{
public InputEditorSelection(InputEditorPosition start,
InputEditorPosition end)
{
start_ = start;
end_ = end;
}
public InputEditorSelection(InputEditorPosition at)
{
start_ = at;
end_ = at;
}
public InputEditorPosition getStart()
{
return start_;
}
public InputEditorPosition getEnd()
{
return end_;
}
public int compareTo(InputEditorSelection o)
{
if (o == null)
return 1 ;
int result = getStart().compareTo(o.getStart());
if (result == 0)
result = getEnd().compareTo(o.getEnd());
return result;
}
public boolean isEmpty()
{
return start_.equals(end_);
}
public InputEditorSelection extendToLineStart()
{
return new InputEditorSelection(
start_.movePosition(0, false),
end_);
}
public InputEditorSelection extendToLineEnd()
{
return new InputEditorSelection(
start_,
end_.movePosition(end_.getLineLength(), false));
}
@Override
public String toString()
{
return "Start: " + (start_ == null ? "null" : start_) +
", End: " + (end_ == null ? "null" : end_);
}
public InputEditorSelection shrinkToNonEmptyLines()
{
InputEditorPosition newEnd = end_.skipEmptyLines(true, start_);
if (newEnd == null || newEnd.compareTo(start_) <= 0)
return new InputEditorSelection(start_, start_);
InputEditorPosition newStart = start_.skipEmptyLines(false, end_);
assert newStart != null;
return new InputEditorSelection(newStart, newEnd);
}
public InputEditorSelection growToIncludeLines(String pattern)
{
return new InputEditorSelection(
start_.growToIncludeLines(pattern, true),
end_.growToIncludeLines(pattern, false));
}
private final InputEditorPosition start_;
private final InputEditorPosition end_;
}