/*
* Copyright (c) 2011, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
*
* 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.google.dart.tools.ui.internal.preferences;
import com.google.dart.tools.ui.Flags;
import com.google.dart.tools.ui.PreferenceConstants;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import java.util.StringTokenizer;
public class MembersOrderPreferenceCache implements IPropertyChangeListener {
public static final int TYPE_INDEX = 0;
public static final int CONSTRUCTORS_INDEX = 1;
public static final int METHOD_INDEX = 2;
public static final int FIELDS_INDEX = 3;
public static final int INIT_INDEX = 4;
public static final int STATIC_FIELDS_INDEX = 5;
public static final int STATIC_INIT_INDEX = 6;
public static final int STATIC_METHODS_INDEX = 7;
public static final int ENUM_CONSTANTS_INDEX = 8;
public static final int N_CATEGORIES = ENUM_CONSTANTS_INDEX + 1;
private static final int PUBLIC_INDEX = 0;
private static final int PRIVATE_INDEX = 1;
private static final int PROTECTED_INDEX = 2;
private static final int DEFAULT_INDEX = 3;
private static final int N_VISIBILITIES = DEFAULT_INDEX + 1;
public static boolean isMemberOrderProperty(String property) {
return PreferenceConstants.APPEARANCE_MEMBER_SORT_ORDER.equals(property)
|| PreferenceConstants.APPEARANCE_VISIBILITY_SORT_ORDER.equals(property)
|| PreferenceConstants.APPEARANCE_ENABLE_VISIBILITY_SORT_ORDER.equals(property);
}
private int[] fCategoryOffsets = null;
private boolean fSortByVisibility;
private int[] fVisibilityOffsets = null;
private IPreferenceStore fPreferenceStore;
public MembersOrderPreferenceCache() {
fPreferenceStore = null;
fCategoryOffsets = null;
fSortByVisibility = false;
fVisibilityOffsets = null;
}
public void dispose() {
fPreferenceStore.removePropertyChangeListener(this);
fPreferenceStore = null;
}
public int getCategoryIndex(int kind) {
if (fCategoryOffsets == null) {
fCategoryOffsets = getCategoryOffsets();
}
return fCategoryOffsets[kind];
}
public int getVisibilityIndex(int modifierFlags) {
if (fVisibilityOffsets == null) {
fVisibilityOffsets = getVisibilityOffsets();
}
int kind = DEFAULT_INDEX;
if (Flags.isPublic(modifierFlags)) {
kind = PUBLIC_INDEX;
} else if (Flags.isPrivate(modifierFlags)) {
kind = PRIVATE_INDEX;
}
return fVisibilityOffsets[kind];
}
public void install(IPreferenceStore store) {
fPreferenceStore = store;
store.addPropertyChangeListener(this);
fSortByVisibility = store.getBoolean(PreferenceConstants.APPEARANCE_ENABLE_VISIBILITY_SORT_ORDER);
}
public boolean isSortByVisibility() {
return fSortByVisibility;
}
@Override
public void propertyChange(PropertyChangeEvent event) {
String property = event.getProperty();
if (PreferenceConstants.APPEARANCE_MEMBER_SORT_ORDER.equals(property)) {
fCategoryOffsets = null;
} else if (PreferenceConstants.APPEARANCE_VISIBILITY_SORT_ORDER.equals(property)) {
fVisibilityOffsets = null;
} else if (PreferenceConstants.APPEARANCE_ENABLE_VISIBILITY_SORT_ORDER.equals(property)) {
fSortByVisibility = fPreferenceStore.getBoolean(PreferenceConstants.APPEARANCE_ENABLE_VISIBILITY_SORT_ORDER);
}
}
private boolean fillCategoryOffsetsFromPreferenceString(String str, int[] offsets) {
StringTokenizer tokenizer = new StringTokenizer(str, ","); //$NON-NLS-1$
int i = 0;
offsets[ENUM_CONSTANTS_INDEX] = i++; // enum constants always on top
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken().trim();
if ("T".equals(token)) { //$NON-NLS-1$
offsets[TYPE_INDEX] = i++;
} else if ("M".equals(token)) { //$NON-NLS-1$
offsets[METHOD_INDEX] = i++;
} else if ("F".equals(token)) { //$NON-NLS-1$
offsets[FIELDS_INDEX] = i++;
} else if ("I".equals(token)) { //$NON-NLS-1$
offsets[INIT_INDEX] = i++;
} else if ("SF".equals(token)) { //$NON-NLS-1$
offsets[STATIC_FIELDS_INDEX] = i++;
} else if ("SI".equals(token)) { //$NON-NLS-1$
offsets[STATIC_INIT_INDEX] = i++;
} else if ("SM".equals(token)) { //$NON-NLS-1$
offsets[STATIC_METHODS_INDEX] = i++;
} else if ("C".equals(token)) { //$NON-NLS-1$
offsets[CONSTRUCTORS_INDEX] = i++;
}
}
return i == N_CATEGORIES;
}
private boolean fillVisibilityOffsetsFromPreferenceString(String str, int[] offsets) {
StringTokenizer tokenizer = new StringTokenizer(str, ","); //$NON-NLS-1$
int i = 0;
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken().trim();
if ("B".equals(token)) { //$NON-NLS-1$
offsets[PUBLIC_INDEX] = i++;
} else if ("V".equals(token)) { //$NON-NLS-1$
offsets[PRIVATE_INDEX] = i++;
} else if ("R".equals(token)) { //$NON-NLS-1$
offsets[PROTECTED_INDEX] = i++;
} else if ("D".equals(token)) { //$NON-NLS-1$
offsets[DEFAULT_INDEX] = i++;
}
}
return i == N_VISIBILITIES;
}
private int[] getCategoryOffsets() {
int[] offsets = new int[N_CATEGORIES];
IPreferenceStore store = fPreferenceStore;
String key = PreferenceConstants.APPEARANCE_MEMBER_SORT_ORDER;
boolean success = fillCategoryOffsetsFromPreferenceString(store.getString(key), offsets);
if (!success) {
store.setToDefault(key);
fillCategoryOffsetsFromPreferenceString(store.getDefaultString(key), offsets);
}
return offsets;
}
private int[] getVisibilityOffsets() {
int[] offsets = new int[N_VISIBILITIES];
IPreferenceStore store = fPreferenceStore;
String key = PreferenceConstants.APPEARANCE_VISIBILITY_SORT_ORDER;
boolean success = fillVisibilityOffsetsFromPreferenceString(store.getString(key), offsets);
if (!success) {
store.setToDefault(key);
fillVisibilityOffsetsFromPreferenceString(store.getDefaultString(key), offsets);
}
return offsets;
}
}