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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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package org.chromium.sdk.internal;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import org.chromium.sdk.Script;
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import org.chromium.sdk.internal.ScriptImpl.Descriptor;
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import org.chromium.sdk.internal.protocol.data.ScriptHandle;
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import org.chromium.sdk.internal.protocol.data.SomeHandle;
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import org.chromium.sdk.internal.tools.v8.V8ProtocolUtil;
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/**
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* Manages scripts known in the corresponding browser tab.
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*/
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public class ScriptManager {
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public interface Callback {
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/**
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* This method gets invoked for every script in the manager.
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*
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* @param script to process
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* @return whether other scripts should be processed. If false, the #forEach
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* method terminates.
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*/
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boolean process(Script script);
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}
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/**
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* Maps script id's to scripts.
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*/
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private final Map<Long, ScriptImpl> idToScript =
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Collections.synchronizedMap(new HashMap<Long, ScriptImpl>());
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private final V8ContextFilter contextFilter;
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ScriptManager(V8ContextFilter contextFilter) {
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this.contextFilter = contextFilter;
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}
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/**
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* Adds a script using a "script" V8 response.
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*
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* @param scriptBody to add the script from
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* @param refs that contain the associated script debug context
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* @return the new script, or {@code null} if the response does not contain
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* a valid script JSON
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*/
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public synchronized Script addScript(ScriptHandle scriptBody, List<SomeHandle> refs) {
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ScriptImpl theScript = findById(V8ProtocolUtil.getScriptIdFromResponse(scriptBody));
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if (theScript == null) {
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Descriptor desc = Descriptor.forResponse(scriptBody, refs, contextFilter);
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if (desc == null) {
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return null;
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}
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theScript = new ScriptImpl(desc);
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idToScript.put(desc.id, theScript);
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}
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if (scriptBody.source() != null) {
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setSourceCode(scriptBody, theScript);
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}
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return theScript;
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}
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/**
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* Associates a source received in a "source" V8 response with the given
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* script.
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*
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* @param scriptBody the JSON response body
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* @param script the script to associate the source with
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*/
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public void setSourceCode(ScriptHandle body, ScriptImpl script) {
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String src = body.source();
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if (src == null) {
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return;
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}
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if (script != null) {
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script.setSource(src);
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}
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}
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/**
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* @param id of the script to find
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* @return the script with {@code id == ref} or {@code null} if none found
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*/
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public ScriptImpl findById(Long id) {
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return idToScript.get(id);
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}
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/**
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* Determines whether all scripts added into this manager have associated
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* sources.
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*
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* @return whether all known scripts have associated sources
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*/
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public boolean isAllSourcesLoaded() {
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final boolean[] result = new boolean[1];
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result[0] = true;
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forEach(new Callback() {
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public boolean process(Script script) {
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if (!script.hasSource()) {
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result[0] = false;
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return false;
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}
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return true;
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}
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});
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return result[0];
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}
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public Collection<Script> allScripts() {
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final Collection<Script> result = new HashSet<Script>();
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forEach(new Callback() {
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public boolean process(Script script) {
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result.add(script);
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return true;
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}
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});
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return result;
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}
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/**
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* This method allows running the same code for all scripts in the manager.
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*
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* @param callback to invoke for every script, until
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* {@link Callback#process(Script)} returns {@code false}.
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*/
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public synchronized void forEach(Callback callback) {
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for (Script script : idToScript.values()) {
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if (!callback.process(script)) {
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return;
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}
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}
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}
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public void reset() {
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idToScript.clear();
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}
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public V8ContextFilter getContextFilter() {
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return contextFilter;
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}
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}
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