| /* |
| * 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.ui.popup; |
| |
| import com.intellij.openapi.ui.popup.JBPopup; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.ui.ListUtil; |
| import com.intellij.ui.components.JBList; |
| import com.intellij.ui.table.JBTable; |
| import com.intellij.ui.treeStructure.Tree; |
| import org.jetbrains.annotations.Contract; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import javax.swing.*; |
| import javax.swing.event.ListSelectionEvent; |
| import javax.swing.event.ListSelectionListener; |
| import javax.swing.event.TreeSelectionEvent; |
| import javax.swing.event.TreeSelectionListener; |
| import javax.swing.tree.TreePath; |
| |
| /** |
| * Use this class to make various hints like QuickDocumentation, ShowImplementations, etc. |
| * respond to the selection change in the original component like ProjectView, various GoTo popups, etc. |
| * |
| * @author gregsh |
| */ |
| public abstract class HintUpdateSupply { |
| private static final Key<HintUpdateSupply> HINT_UPDATE_MARKER = Key.create("HINT_UPDATE_MARKER"); |
| |
| @Nullable |
| private JBPopup myHint; |
| |
| @Nullable |
| public static HintUpdateSupply getSupply(@NotNull JComponent component) { |
| return (HintUpdateSupply)component.getClientProperty(HINT_UPDATE_MARKER); |
| } |
| |
| public static void hideHint(@NotNull JComponent component) { |
| HintUpdateSupply supply = getSupply(component); |
| if (supply != null) supply.hideHint(); |
| } |
| |
| protected HintUpdateSupply(@NotNull JComponent component) { |
| installSupply(component); |
| } |
| |
| public HintUpdateSupply(@NotNull final JBTable table) { |
| installSupply(table); |
| ListSelectionListener listener = new ListSelectionListener() { |
| @Override |
| public void valueChanged(final ListSelectionEvent e) { |
| if (!isHintVisible(HintUpdateSupply.this.myHint) || isSelectedByMouse(table)) return; |
| |
| int selected = ((ListSelectionModel)e.getSource()).getLeadSelectionIndex(); |
| int rowCount = table.getRowCount(); |
| if (selected == -1 || rowCount == 0) return; |
| |
| PsiElement element = getPsiElementForHint(table.getValueAt(Math.min(selected, rowCount - 1), 0)); |
| if (element != null && element.isValid()) { |
| updateHint(element); |
| } |
| } |
| }; |
| table.getSelectionModel().addListSelectionListener(listener); |
| table.getColumnModel().getSelectionModel().addListSelectionListener(listener); |
| } |
| |
| public HintUpdateSupply(@NotNull final Tree tree) { |
| installSupply(tree); |
| tree.addTreeSelectionListener(new TreeSelectionListener() { |
| @Override |
| public void valueChanged(final TreeSelectionEvent e) { |
| if (!isHintVisible(HintUpdateSupply.this.myHint) || isSelectedByMouse(tree)) return; |
| |
| TreePath path = tree.getSelectionPath(); |
| if (path != null) { |
| final PsiElement psiElement = getPsiElementForHint(path.getLastPathComponent()); |
| if (psiElement != null && psiElement.isValid()) { |
| updateHint(psiElement); |
| } |
| } |
| } |
| }); |
| } |
| |
| public HintUpdateSupply(@NotNull final JBList list) { |
| installSupply(list); |
| list.addListSelectionListener(new ListSelectionListener() { |
| @Override |
| public void valueChanged(final ListSelectionEvent e) { |
| if (!isHintVisible(HintUpdateSupply.this.myHint) || isSelectedByMouse(list)) return; |
| |
| Object[] selectedValues = ((JList)e.getSource()).getSelectedValues(); |
| if (selectedValues.length != 1) return; |
| |
| PsiElement element = getPsiElementForHint(selectedValues[0]); |
| if (element != null && element.isValid()) { |
| updateHint(element); |
| } |
| } |
| }); |
| } |
| |
| @Nullable |
| protected abstract PsiElement getPsiElementForHint(@Nullable Object selectedValue); |
| |
| private void installSupply(@NotNull JComponent component) { |
| component.putClientProperty(HINT_UPDATE_MARKER, this); |
| } |
| |
| public void registerHint(JBPopup hint) { |
| hideHint(); |
| myHint = hint; |
| } |
| |
| public void hideHint() { |
| if (isHintVisible(myHint)) { |
| myHint.cancel(); |
| } |
| |
| myHint = null; |
| } |
| |
| public void updateHint(PsiElement element) { |
| if (!isHintVisible(myHint)) return; |
| |
| PopupUpdateProcessorBase updateProcessor = myHint.getUserData(PopupUpdateProcessorBase.class); |
| if (updateProcessor != null) { |
| updateProcessor.updatePopup(element); |
| } |
| } |
| |
| @Contract("!null->true") |
| private static boolean isHintVisible(JBPopup hint) { |
| return hint != null && hint.isVisible(); |
| } |
| |
| private static boolean isSelectedByMouse(@NotNull JComponent c) { |
| return Boolean.TRUE.equals(c.getClientProperty(ListUtil.SELECTED_BY_MOUSE_EVENT)); |
| } |
| } |