Java tutorial
/* * Copyright (C) 2012 The Android Open Source Project * * 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.android.ide.eclipse.ddms.systrace; import com.android.ddmuilib.TableHelper; import com.google.common.collect.ImmutableSet; import com.google.common.collect.Lists; import com.google.common.collect.Sets; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableItem; import org.eclipse.swt.widgets.Text; import java.io.File; import java.util.List; import java.util.Set; public class SystraceOptionsDialogV2 extends TitleAreaDialog implements ISystraceOptionsDialog { private static final String TITLE = "Systrace (Android System Trace)"; private static final String DEFAULT_MESSAGE = "Settings to use while capturing system level trace"; private static final String DEFAULT_TRACE_FNAME = "trace.html"; //$NON-NLS-1$ private static final Set<String> sCommonTags = ImmutableSet.of("am", "app", "dalvik", "disk", "gfx", "input", "res", "sched", "view", "webview", "wm"); private Text mDestinationText; private String mDestinationPath; private Text mTraceDurationText; private Text mTraceBufferSizeText; private Combo mTraceAppCombo; private static String sSaveToFolder = System.getProperty("user.home"); //$NON-NLS-1$ private static String sTraceDuration = "5"; private static String sTraceBufferSize = "2048"; private static Set<String> sEnabledTags = Sets.newHashSet(sCommonTags); private static String sLastSelectedApp = null; private final List<SystraceTag> mCommonSupportedTags; private final List<SystraceTag> mAdvancedSupportedTags; private final List<String> mCurrentApps; private final SystraceOptions mOptions = new SystraceOptions(); private Table mCommonTagsTable; private Table mAdvancedTagsTable; public SystraceOptionsDialogV2(Shell parentShell, List<SystraceTag> tags, List<String> apps) { super(parentShell); mCurrentApps = apps; mCommonSupportedTags = Lists.newArrayListWithExpectedSize(tags.size()); mAdvancedSupportedTags = Lists.newArrayListWithExpectedSize(tags.size()); for (SystraceTag supportedTag : tags) { if (sCommonTags.contains(supportedTag.tag)) { mCommonSupportedTags.add(supportedTag); } else { mAdvancedSupportedTags.add(supportedTag); } } } @Override protected Control createDialogArea(Composite parent) { setTitle(TITLE); setMessage(DEFAULT_MESSAGE); Composite c = new Composite(parent, SWT.BORDER); c.setLayout(new GridLayout(3, false)); c.setLayoutData(new GridData(GridData.FILL_BOTH)); Label l = new Label(c, SWT.NONE); l.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); l.setText("Destination File: "); mDestinationText = new Text(c, SWT.BORDER); mDestinationText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); mDestinationText.setText(sSaveToFolder + File.separator + DEFAULT_TRACE_FNAME); final Button browse = new Button(c, SWT.NONE); browse.setText("Browse..."); browse.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { String path = openBrowseDialog(browse.getShell()); if (path != null) mDestinationText.setText(path); } }); Label lblTraceDurationseconds = new Label(c, SWT.NONE); lblTraceDurationseconds.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); lblTraceDurationseconds.setText("Trace duration (seconds): "); mTraceDurationText = new Text(c, SWT.BORDER); mTraceDurationText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1)); mTraceDurationText.setText(sTraceDuration); Label lblTraceBufferSize = new Label(c, SWT.NONE); lblTraceBufferSize.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); lblTraceBufferSize.setText("Trace Buffer Size (kb): "); mTraceBufferSizeText = new Text(c, SWT.BORDER); mTraceBufferSizeText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1)); mTraceBufferSizeText.setText(sTraceBufferSize); Label lblTraceAppName = new Label(c, SWT.NONE); lblTraceAppName.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); lblTraceAppName.setText("Enable Application Traces from: "); mTraceAppCombo = new Combo(c, SWT.DROP_DOWN | SWT.READ_ONLY); mTraceAppCombo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1)); String[] items = new String[mCurrentApps.size() + 1]; items[0] = "None"; for (int i = 0; i < mCurrentApps.size(); i++) { items[i + 1] = mCurrentApps.get(i); } mTraceAppCombo.setItems(items); if (sLastSelectedApp != null) { mTraceAppCombo.setText(sLastSelectedApp); } else { mTraceAppCombo.select(0); } Label separator = new Label(c, SWT.SEPARATOR | SWT.HORIZONTAL); GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 3; separator.setLayoutData(gd); ModifyListener m = new ModifyListener() { @Override public void modifyText(ModifyEvent e) { validateFields(); } }; mDestinationText.addModifyListener(m); mTraceBufferSizeText.addModifyListener(m); mTraceDurationText.addModifyListener(m); mCommonTagsTable = createTable(c, "Commonly Used Tags: ", mCommonSupportedTags); mAdvancedTagsTable = createTable(c, "Advanced Options: ", mAdvancedSupportedTags); return c; } private Table createTable(Composite c, String label, List<SystraceTag> supportedTags) { Label l = new Label(c, SWT.NONE); l.setText(label); l.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); Table table = new Table(c, SWT.CHECK | SWT.BORDER); GridData gd = new GridData(GridData.FILL_BOTH); gd.horizontalSpan = 2; table.setLayoutData(gd); table.setHeaderVisible(false); table.setLinesVisible(false); for (SystraceTag tag : supportedTags) { TableItem item = new TableItem(table, SWT.NONE); item.setText(tag.info); item.setChecked(sEnabledTags.contains(tag.tag)); } TableHelper.createTableColumn(table, "TagHeaderNotDisplayed", //$NON-NLS-1$ SWT.LEFT, "SampleTagForColumnLengthCalculation", //$NON-NLS-1$ null, null); return table; } private void validateFields() { // validate trace destination path String msg = validatePath(mDestinationText.getText()); if (msg != null) { setErrorMessage(msg); getButton(OK).setEnabled(false); return; } // validate the trace duration if (!validateInteger(mTraceDurationText.getText())) { setErrorMessage("Trace Duration should be a valid integer (seconds)"); getButton(OK).setEnabled(false); return; } // validate the trace buffer size if (!validateInteger(mTraceBufferSizeText.getText())) { setErrorMessage("Trace Buffer Size should be a valid integer (kilobytes)"); getButton(OK).setEnabled(false); return; } getButton(OK).setEnabled(true); setErrorMessage(null); } private boolean validateInteger(String text) { if (text == null || text.isEmpty()) { return true; } try { Integer.parseInt(text); return true; } catch (NumberFormatException e) { return false; } } private String validatePath(String path) { if (path == null || path.isEmpty()) { return null; } File f = new File(path); if (f.isDirectory()) { return String.format("The path '%s' points to a folder", path); } if (!f.exists()) { // if such a file doesn't exist, make sure the parent folder is valid if (!f.getParentFile().isDirectory()) { return String.format("That path '%s' is not a valid folder.", f.getParent()); } } return null; } private String openBrowseDialog(Shell parentShell) { FileDialog fd = new FileDialog(parentShell, SWT.SAVE); fd.setText("Save To"); fd.setFileName(DEFAULT_TRACE_FNAME); fd.setFilterPath(sSaveToFolder); fd.setFilterExtensions(new String[] { "*.html" }); //$NON-NLS-1$ String fname = fd.open(); if (fname == null || fname.trim().length() == 0) { return null; } sSaveToFolder = fd.getFilterPath(); return fname; } @Override protected void okPressed() { mDestinationPath = mDestinationText.getText().trim(); sTraceDuration = mTraceDurationText.getText(); if (!sTraceDuration.isEmpty()) { mOptions.mTraceDuration = Integer.parseInt(sTraceDuration); } sTraceBufferSize = mTraceBufferSizeText.getText(); if (!sTraceBufferSize.isEmpty()) { mOptions.mTraceBufferSize = Integer.parseInt(sTraceBufferSize); } if (mTraceAppCombo.getSelectionIndex() != 0) { mOptions.mTraceApp = sLastSelectedApp = mTraceAppCombo.getText(); } sEnabledTags.clear(); sEnabledTags.addAll(getEnabledTags(mCommonTagsTable, mCommonSupportedTags)); sEnabledTags.addAll(getEnabledTags(mAdvancedTagsTable, mAdvancedSupportedTags)); super.okPressed(); } private static Set<String> getEnabledTags(Table table, List<SystraceTag> tags) { Set<String> enabledTags = Sets.newHashSetWithExpectedSize(tags.size()); for (int i = 0; i < table.getItemCount(); i++) { TableItem it = table.getItem(i); if (it.getChecked()) { enabledTags.add(tags.get(i).tag); } } return enabledTags; } @Override public ISystraceOptions getSystraceOptions() { return mOptions; } @Override public String getTraceFilePath() { return mDestinationPath; } private class SystraceOptions implements ISystraceOptions { private int mTraceBufferSize; private int mTraceDuration; private String mTraceApp; @Override public String getTags() { return null; } @Override public String getOptions() { StringBuilder sb = new StringBuilder(5 * mCommonSupportedTags.size()); if (mTraceApp != null) { sb.append("-a "); //$NON-NLS-1$ sb.append(mTraceApp); sb.append(' '); } if (mTraceDuration > 0) { sb.append("-t"); //$NON-NLS-1$ sb.append(mTraceDuration); sb.append(' '); } if (mTraceBufferSize > 0) { sb.append("-b "); //$NON-NLS-1$ sb.append(mTraceBufferSize); sb.append(' '); } for (String s : sEnabledTags) { sb.append(s); sb.append(' '); } return sb.toString().trim(); } } }