Java tutorial
/* * Copyright 2000-2009 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.debugger.settings; import com.intellij.debugger.DebuggerBundle; import com.intellij.debugger.ui.tree.render.ArrayRenderer; import com.intellij.openapi.application.ApplicationNamesInfo; import com.intellij.openapi.options.UnnamedConfigurable; import com.intellij.openapi.ui.DialogWrapper; import com.intellij.openapi.ui.Messages; import javax.swing.*; import javax.swing.event.DocumentEvent; import javax.swing.event.DocumentListener; import java.awt.*; public class ArrayRendererConfigurable implements UnnamedConfigurable { private JTextField myEntriesLimit; private JTextField myStartIndex; private JTextField myEndIndex; private boolean myEntriesLimitUpdateEnabled = true; private boolean myIndexUpdateEnabled = true; private final ArrayRenderer myRenderer; private JComponent myPanel; public ArrayRendererConfigurable(ArrayRenderer renderer) { myRenderer = renderer; } public ArrayRenderer getRenderer() { return myRenderer; } public void reset() { myStartIndex.setText(String.valueOf(myRenderer.START_INDEX)); myEndIndex.setText(String.valueOf(myRenderer.END_INDEX)); myEntriesLimit.setText(String.valueOf(myRenderer.ENTRIES_LIMIT)); } public void apply() { applyTo(myRenderer, true); } private void applyTo(ArrayRenderer renderer, boolean showBigRangeWarning) { int newStartIndex = getInt(myStartIndex); int newEndIndex = getInt(myEndIndex); int newLimit = getInt(myEntriesLimit); if (newStartIndex >= 0 && newEndIndex >= 0) { if (newStartIndex >= newEndIndex) { int currentStartIndex = renderer.START_INDEX; int currentEndIndex = renderer.END_INDEX; newEndIndex = newStartIndex + (currentEndIndex - currentStartIndex); } if (newLimit <= 0) { newLimit = 1; } if (showBigRangeWarning && (newEndIndex - newStartIndex > 10000)) { final int answer = Messages.showOkCancelDialog(myPanel.getRootPane(), DebuggerBundle.message("warning.range.too.big", ApplicationNamesInfo.getInstance().getProductName()), DebuggerBundle.message("title.range.too.big"), Messages.getWarningIcon()); if (answer != DialogWrapper.OK_EXIT_CODE) { return; } } } renderer.START_INDEX = newStartIndex; renderer.END_INDEX = newEndIndex; renderer.ENTRIES_LIMIT = newLimit; } public JComponent createComponent() { myPanel = new JPanel(new GridBagLayout()); myStartIndex = new JTextField(5); myEndIndex = new JTextField(5); myEntriesLimit = new JTextField(5); final FontMetrics fontMetrics = myStartIndex.getFontMetrics(myStartIndex.getFont()); final Dimension minSize = new Dimension(myStartIndex.getPreferredSize()); //noinspection HardCodedStringLiteral minSize.width = fontMetrics.stringWidth("AAAAA"); myStartIndex.setMinimumSize(minSize); myEndIndex.setMinimumSize(minSize); myEntriesLimit.setMinimumSize(minSize); JLabel startIndexLabel = new JLabel( DebuggerBundle.message("label.array.renderer.configurable.start.index")); startIndexLabel.setLabelFor(myStartIndex); JLabel endIndexLabel = new JLabel(DebuggerBundle.message("label.array.renderer.configurable.end.index")); endIndexLabel.setLabelFor(myEndIndex); JLabel entriesLimitLabel = new JLabel( DebuggerBundle.message("label.array.renderer.configurable.max.count1")); entriesLimitLabel.setLabelFor(myEntriesLimit); myPanel.add(startIndexLabel, new GridBagConstraints(0, GridBagConstraints.RELATIVE, 1, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 8), 0, 0)); myPanel.add(myStartIndex, new GridBagConstraints(1, GridBagConstraints.RELATIVE, 1, 1, 0.0, 0.0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 8), 0, 0)); myPanel.add(endIndexLabel, new GridBagConstraints(2, GridBagConstraints.RELATIVE, 1, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 8), 0, 0)); myPanel.add(myEndIndex, new GridBagConstraints(3, GridBagConstraints.RELATIVE, 1, 1, 1.0, 0.0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0)); myPanel.add(entriesLimitLabel, new GridBagConstraints(0, GridBagConstraints.RELATIVE, 1, 1, 0.0, 1.0, GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(4, 0, 0, 8), 0, 0)); myPanel.add(myEntriesLimit, new GridBagConstraints(1, GridBagConstraints.RELATIVE, 1, 1, 0.0, 0.0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, new Insets(4, 0, 0, 8), 0, 0)); myPanel.add(new JLabel(DebuggerBundle.message("label.array.renderer.configurable.max.count2")), new GridBagConstraints(2, GridBagConstraints.RELATIVE, 2, 1, 1.0, 1.0, GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(4, 0, 0, 0), 0, 0)); final DocumentListener listener = new DocumentListener() { private void updateEntriesLimit() { final boolean state = myIndexUpdateEnabled; myIndexUpdateEnabled = false; try { if (myEntriesLimitUpdateEnabled) { myEntriesLimit.setText(String.valueOf(getInt(myEndIndex) - getInt(myStartIndex) + 1)); } } finally { myIndexUpdateEnabled = state; } } public void changedUpdate(DocumentEvent e) { updateEntriesLimit(); } public void insertUpdate(DocumentEvent e) { updateEntriesLimit(); } public void removeUpdate(DocumentEvent e) { updateEntriesLimit(); } }; myStartIndex.getDocument().addDocumentListener(listener); myEndIndex.getDocument().addDocumentListener(listener); myEntriesLimit.getDocument().addDocumentListener(new DocumentListener() { private void updateEndIndex() { final boolean state = myEntriesLimitUpdateEnabled; myEntriesLimitUpdateEnabled = false; try { if (myIndexUpdateEnabled) { myEndIndex.setText(String.valueOf(getInt(myEntriesLimit) + getInt(myStartIndex) - 1)); } } finally { myEntriesLimitUpdateEnabled = state; } } public void insertUpdate(DocumentEvent e) { updateEndIndex(); } public void removeUpdate(DocumentEvent e) { updateEndIndex(); } public void changedUpdate(DocumentEvent e) { updateEndIndex(); } }); return myPanel; } private static int getInt(JTextField textField) { int newEndIndex = 0; try { newEndIndex = Integer.parseInt(textField.getText().trim()); } catch (NumberFormatException exception) { // ignored } return newEndIndex; } public boolean isModified() { ArrayRenderer cloneRenderer = myRenderer.clone(); applyTo(cloneRenderer, false); final boolean valuesEqual = (myRenderer.END_INDEX == cloneRenderer.END_INDEX) && (myRenderer.START_INDEX == cloneRenderer.START_INDEX) && (myRenderer.ENTRIES_LIMIT == cloneRenderer.ENTRIES_LIMIT); return !valuesEqual; } public void disposeUIResources() { } }