/*
* 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 scratch.ide.popup;
import com.intellij.openapi.ui.popup.ListPopupStep;
import com.intellij.openapi.ui.popup.ListSeparator;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.ui.speedSearch.ElementFilter;
import com.intellij.ui.speedSearch.SpeedSearch;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.util.ArrayList;
import java.util.List;
@SuppressWarnings("unchecked")
class PopupModelWithMovableItems extends AbstractListModel {
private final List<Object> myOriginalList;
private final List<Object> myFilteredList = new ArrayList<Object>();
private final ElementFilter myFilter;
private final ListPopupStep myStep;
private int myFullMatchIndex = -1;
private int myStartsWithIndex = -1;
private final SpeedSearch mySpeedSearch;
public PopupModelWithMovableItems(ElementFilter filter, SpeedSearch speedSearch, ListPopupStep step) {
myFilter = filter;
myStep = step;
mySpeedSearch = speedSearch;
myOriginalList = new ArrayList<Object>(step.getValues());
rebuildLists();
}
public int moveItem(Object item, int shift) {
int oldIndex = myOriginalList.indexOf(item);
int newIndex = oldIndex + shift;
if (newIndex < 0) newIndex += myOriginalList.size();
if (newIndex >= myOriginalList.size()) newIndex -= myOriginalList.size();
myOriginalList.remove(oldIndex);
myOriginalList.add(newIndex, item);
rebuildLists();
fireContentsChanged(this, 0, myFilteredList.size());
return newIndex;
}
public void deleteItem(final Object item) {
final int i = myOriginalList.indexOf(item);
if (i >= 0) {
myOriginalList.remove(i);
rebuildLists();
fireContentsChanged(this, 0, myFilteredList.size());
}
}
@Nullable
public Object get(final int i) {
if (i >= 0 && i < myFilteredList.size()) {
return myFilteredList.get(i);
}
return null;
}
private void rebuildLists() {
myFilteredList.clear();
myFullMatchIndex = -1;
myStartsWithIndex = -1;
for (Object each : myOriginalList) {
if (myFilter.shouldBeShowing(each)) {
addToFiltered(each);
}
}
}
private void addToFiltered(Object each) {
myFilteredList.add(each);
String filterString = toUpperCase(mySpeedSearch.getFilter());
String candidateString = toUpperCase(myStep.getTextFor(each));
int index = myFilteredList.size() - 1;
if (myFullMatchIndex == -1 && filterString.equals(candidateString)) {
myFullMatchIndex = index;
}
if (myStartsWithIndex == -1 && candidateString.startsWith(filterString)) {
myStartsWithIndex = index;
}
}
@Override public int getSize() {
return myFilteredList.size();
}
@Override public Object getElementAt(int index) {
if (index >= myFilteredList.size()) {
return null;
}
return myFilteredList.get(index);
}
public boolean isSeparatorAboveOf(Object aValue) {
return getSeparatorAbove(aValue) != null;
}
public String getCaptionAboveOf(Object value) {
ListSeparator separator = getSeparatorAbove(value);
if (separator != null) {
return separator.getText();
}
return "";
}
private ListSeparator getSeparatorAbove(Object value) {
return myStep.getSeparatorAbove(value);
}
public void refilter() {
rebuildLists();
if (myFilteredList.isEmpty() && !myOriginalList.isEmpty()) {
mySpeedSearch.noHits();
}
else {
fireContentsChanged(this, 0, myFilteredList.size());
}
}
public boolean isVisible(Object object) {
return myFilteredList.contains(object);
}
public int getClosestMatchIndex() {
return myFullMatchIndex != -1 ? myFullMatchIndex : myStartsWithIndex;
}
private static String toUpperCase(String s) {
return StringUtil.capitalize(s);
}
}