1 files changed, 192 insertions, 0 deletions
diff --git a/JLanguageTool/src/java/de/danielnaber/languagetool/gui/Tools.java b/JLanguageTool/src/java/de/danielnaber/languagetool/gui/Tools.java
new file mode 100644
index 0000000..5abe803
--- /dev/null
+++ b/JLanguageTool/src/java/de/danielnaber/languagetool/gui/Tools.java
@@ -0,0 +1,192 @@
+/* LanguageTool, a natural language style checker 
+ * Copyright (C) 2005 Daniel Naber (http://www.danielnaber.de)
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
+ * USA
+ */
+package de.danielnaber.languagetool.gui;
+
+import java.awt.Frame;
+import java.io.File;
+import java.text.MessageFormat;
+import java.util.ResourceBundle;
+
+import javax.swing.JFileChooser;
+import javax.swing.JOptionPane;
+import javax.swing.filechooser.FileFilter;
+
+import de.danielnaber.languagetool.tools.StringTools;
+
+/**
+ * GUI-related tools.
+ * 
+ * @author Daniel Naber
+ */
+public class Tools {
+
+  private static final int DEFAULT_CONTEXT_SIZE = 40; // characters
+  private static final String MARKER_START = "<b><font color=\"red\">";
+  private static final String MARKER_END = "</font></b>";
+
+  private Tools() {
+    // no constructor
+  }
+
+  public static String makeTexti18n(final ResourceBundle messages, final String key,
+      final Object[] messageArguments) {
+    final MessageFormat formatter = new MessageFormat("");
+    formatter.applyPattern(messages.getString(key));
+    return formatter.format(messageArguments);
+  }
+
+  /**
+   * Get the default context (40 characters) of the given text range,
+   * highlighting the range with HTML.
+   */
+  public static String getContext(final int fromPos, final int toPos, final String text) {
+    return getContext(fromPos, toPos, text, DEFAULT_CONTEXT_SIZE);
+  }
+
+  /**
+   * Get the context (<code>contextSize</code> characters) of the given text
+   * range, highlighting the range with HTML code.
+   */
+  public static String getContext(final int fromPos, final int toPos, final String fileContents,
+      int contextSize) {
+    return getContext(fromPos, toPos, fileContents, contextSize, MARKER_START,
+        MARKER_END, true);
+  }
+
+  /**
+   * Get the context (<code>contextSize</code> characters) of the given text
+   * range, highlighting the range with the given marker strings, not escaping
+   * HTML.
+   */
+  public static String getContext(final int fromPos, final int toPos,
+      final String fileContents, final int contextSize,
+      final String markerStart, final String markerEnd) {
+    return getContext(fromPos, toPos, fileContents, contextSize, markerStart,
+        markerEnd, false);
+  }
+  /**
+   * Get the context (<code>contextSize</code> characters) of the given text
+   * range, highlighting the range with the given marker strings.
+   * 
+   * @param fromPos
+   *          the start position of the error in characters
+   * @param toPos
+   *          the end position of the error in characters
+   * @param text
+   *          the text from which the context should be taken
+   * @param contextSize
+   *          the size of the context in characters
+   * @param markerStart
+   *          the string used to mark the beginning of the error
+   * @param markerEnd
+   *          the string used to mark the end of the error
+   * @param escapeHTML
+   *          whether HTML/XML characters should be escaped
+   */
+  public static String getContext(final int fromPos, final int toPos,
+      String text, final int contextSize, final String markerStart,
+      final String markerEnd, final boolean escapeHTML) {
+    text = text.replace('\n', ' ');
+    // calculate context region:
+    int startContent = fromPos - contextSize;
+    String prefix = "...";
+    String postfix = "...";
+    String markerPrefix = "   ";
+    if (startContent < 0) {
+      prefix = "";
+      markerPrefix = "";
+      startContent = 0;
+    }
+    int endContent = toPos + contextSize;
+    final int fileLen = text.length();
+    if (endContent > fileLen) {
+      postfix = "";
+      endContent = fileLen;
+    }
+    // make "^" marker. inefficient but robust implementation:
+    final StringBuilder marker = new StringBuilder();
+    final int totalLen = fileLen + prefix.length();
+    for (int i = 0; i < totalLen; i++) {
+      if (i >= fromPos && i < toPos) {
+        marker.append('^');
+      } else {
+        marker.append(' ');
+      }
+    }
+    // now build context string plus marker:
+    final StringBuilder sb = new StringBuilder();
+    sb.append(prefix);
+    sb.append(text.substring(startContent, endContent));
+    final String markerStr = markerPrefix
+        + marker.substring(startContent, endContent);
+    sb.append(postfix);
+    final int startMark = markerStr.indexOf('^');
+    final int endMark = markerStr.lastIndexOf('^');
+    String result = sb.toString();
+    if (escapeHTML) {
+      result = StringTools.escapeHTML(result.substring(0, startMark))
+          + markerStart
+          + StringTools.escapeHTML(result.substring(startMark, endMark + 1))
+          + markerEnd + StringTools.escapeHTML(result.substring(endMark + 1));
+    } else {
+      result = result.substring(0, startMark) + markerStart
+          + result.substring(startMark, endMark + 1) + markerEnd
+          + result.substring(endMark + 1);
+    }
+    return result;
+  }
+
+  /**
+   * Show a file chooser dialog and return the file selected by the user or
+   * <code>null</code>.
+   */
+  static File openFileDialog(final Frame frame, final FileFilter fileFilter) {
+    final JFileChooser jfc = new JFileChooser();
+    jfc.setFileFilter(fileFilter);
+    jfc.showOpenDialog(frame);
+    final File file = jfc.getSelectedFile();
+    if (file == null) {
+      return null;
+    }
+    return file;
+  }
+
+  /**
+   * Show the exception (with stacktrace) in a dialog and print it to STDERR.
+   */
+  static void showError(final Exception e) {
+    final String msg = de.danielnaber.languagetool.tools.Tools
+        .getFullStackTrace(e);
+    JOptionPane
+        .showMessageDialog(null, msg, "Error", JOptionPane.ERROR_MESSAGE);
+    e.printStackTrace();
+  }
+
+  /**
+   * Show the exception (message without stacktrace) in a dialog and print it to
+   * STDERR.
+   */
+  static void showErrorMessage(final Exception e) {
+    final String msg = e.getMessage();
+    JOptionPane
+        .showMessageDialog(null, msg, "Error", JOptionPane.ERROR_MESSAGE);
+    e.printStackTrace();
+  }
+
+}