1 files changed, 120 insertions, 0 deletions
diff --git a/platform/lang-impl/src/com/intellij/application/options/codeStyle/RightMarginForm.java b/platform/lang-impl/src/com/intellij/application/options/codeStyle/RightMarginForm.java
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index 000000000000..70c747dc11ca
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+++ b/platform/lang-impl/src/com/intellij/application/options/codeStyle/RightMarginForm.java
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+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * 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 com.intellij.application.options.codeStyle;
+
+import com.intellij.lang.Language;
+import com.intellij.psi.codeStyle.CodeStyleSettings;
+import com.intellij.psi.codeStyle.CommonCodeStyleSettings;
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.*;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;
+
+/**
+ * Can be used for languages which do not use standard "Wrapping and Braces" panel.
+ * <p>
+ * <strong>Note</strong>: besides adding the panel to UI it is necessary to make sure that language's own
+ * <code>LanguageCodeStyleSettingsProvider</code> explicitly supports RIGHT_MARGIN field in <code>customizeSettings()</code>
+ * method as shown below:
+ * <pre>
+ * public void customizeSettings(...) {
+ *   if (settingsType == SettingsType.WRAPPING_AND_BRACES_SETTINGS) {
+ *     consumer.showStandardOptions("RIGHT_MARGIN");
+ *   }
+ * }
+ * </pre>
+ * @author Rustam Vishnyakov
+ */
+public class RightMarginForm {
+  private JTextField myRightMarginField;
+  private JCheckBox myDefaultGeneralCheckBox;
+  private JPanel myTopPanel;
+  private final Language myLanguage;
+  private final int myDefaultRightMargin;
+
+  public RightMarginForm(@NotNull Language language, @NotNull CodeStyleSettings settings) {
+    myLanguage = language;
+    myDefaultRightMargin = settings.RIGHT_MARGIN;
+    myDefaultGeneralCheckBox.addChangeListener(new ChangeListener() {
+      @Override
+      public void stateChanged(ChangeEvent e) {
+        if (myDefaultGeneralCheckBox.isSelected()) {
+          myRightMarginField.setText(Integer.toString(myDefaultRightMargin));
+          myRightMarginField.setEnabled(false);
+        }
+        else {
+          myRightMarginField.setEnabled(true);
+        }
+      }
+    });
+  }
+
+  public void reset(@NotNull CodeStyleSettings settings) {
+    CommonCodeStyleSettings langSettings = settings.getCommonSettings(myLanguage);
+    if (langSettings != settings && langSettings.RIGHT_MARGIN >= 0) {
+      myDefaultGeneralCheckBox.setSelected(false);
+      myRightMarginField.setText(Integer.toString(langSettings.RIGHT_MARGIN));
+    }
+    else {
+      myDefaultGeneralCheckBox.setSelected(true);
+      myRightMarginField.setText(Integer.toString(settings.RIGHT_MARGIN));
+      if (langSettings == settings) {
+        myDefaultGeneralCheckBox.setEnabled(false);
+        myRightMarginField.setEnabled(false);
+      }
+    }
+  }
+
+  public void apply(@NotNull CodeStyleSettings settings) {
+    CommonCodeStyleSettings langSettings = settings.getCommonSettings(myLanguage);
+    if (langSettings != settings) {
+      if (myDefaultGeneralCheckBox.isSelected()) {
+        langSettings.RIGHT_MARGIN = -1;
+      }
+      else {
+        langSettings.RIGHT_MARGIN = getFieldRightMargin(settings.RIGHT_MARGIN);
+      }
+    }
+  }
+
+  public boolean isModified(@NotNull CodeStyleSettings settings) {
+    CommonCodeStyleSettings langSettings = settings.getCommonSettings(myLanguage);
+    if (myDefaultGeneralCheckBox.isSelected()) {
+      return langSettings.RIGHT_MARGIN >= 0;
+    }
+    else {
+      return langSettings.RIGHT_MARGIN != getFieldRightMargin(settings.RIGHT_MARGIN);
+    }
+  }
+
+  private int getFieldRightMargin(int fallBackValue) {
+    String strValue = myRightMarginField.getText();
+    if (!strValue.trim().isEmpty()) {
+      try {
+        return Integer.parseInt(strValue);
+      }
+      catch (NumberFormatException e) {
+        myRightMarginField.setText(Integer.toString(fallBackValue));
+      }
+    }
+    return fallBackValue;
+  }
+
+  public JPanel getTopPanel() {
+    return myTopPanel;
+  }
+}