mirror of
https://codeberg.org/Freeyourgadget/Gadgetbridge.git
synced 2025-01-14 11:01:06 +01:00
eaaa940637
Now native controls seem to work (including datepicker), still the webview is not started upon watchapp start, but when long-pressing each app in the app manager. After the webview is started it will live in the background until device disconnect.
296 lines
11 KiB
Java
296 lines
11 KiB
Java
package nodomain.freeyourgadget.gadgetbridge.util;
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import android.app.Activity;
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import android.content.Context;
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import android.content.Intent;
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import android.content.MutableContextWrapper;
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import android.net.Uri;
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import android.webkit.ConsoleMessage;
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import android.webkit.JavascriptInterface;
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import android.webkit.WebChromeClient;
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import android.webkit.WebSettings;
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import android.webkit.WebView;
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import android.webkit.WebViewClient;
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import android.widget.Toast;
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import org.json.JSONException;
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import org.json.JSONObject;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.io.Writer;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.util.Iterator;
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import java.util.Scanner;
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import java.util.UUID;
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import nodomain.freeyourgadget.gadgetbridge.GBApplication;
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import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
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public class WebViewSingleton extends Activity {
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private static final Logger LOG = LoggerFactory.getLogger(WebViewSingleton.class);
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private static WebView instance = null;
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private static JSInterface jsInterface;
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private static MutableContextWrapper contextWrapper = null;
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private WebViewSingleton() {
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}
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public static WebView getorInitWebView(Context context, GBDevice device, UUID uuid) {
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if (context instanceof Activity) {
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final MutableContextWrapper _contextWrapper = new MutableContextWrapper(context);
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if (contextWrapper != null) {
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contextWrapper.setBaseContext(context);
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} else {
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contextWrapper = _contextWrapper;
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}
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}
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//here we are sure that contextWrapper is either null or an activity, hence we run on the main thread
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if (contextWrapper != null) {
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if (instance == null) {
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instance = new WebView(contextWrapper);
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instance.setWillNotDraw(true);
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instance.clearCache(true);
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instance.setWebViewClient(new GBWebClient());
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instance.setWebChromeClient(new GBChromeClient());
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instance.setWebContentsDebuggingEnabled(true);
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WebSettings webSettings = instance.getSettings();
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webSettings.setJavaScriptEnabled(true);
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//needed to access the DOM
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webSettings.setDomStorageEnabled(true);
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//needed for localstorage
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webSettings.setDatabaseEnabled(true);
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}
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if (jsInterface == null || (jsInterface != null && (!device.equals(jsInterface.device) || !uuid.equals(jsInterface.mUuid)))) {
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instance.removeJavascriptInterface("GBjs");
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jsInterface = new JSInterface(device, uuid);
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instance.addJavascriptInterface(jsInterface, "GBjs");
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instance.loadUrl("file:///android_asset/app_config/configure.html");
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} else {
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LOG.debug("Not reloading the webview " + jsInterface.mUuid.toString());
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}
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} else {
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LOG.debug("WEBV: not using the passed context, as it is not an activity");
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}
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return instance;
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}
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public static void disposeWebView() {
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if (instance != null) {
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instance.destroy();
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instance = null;
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}
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}
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private static class GBChromeClient extends WebChromeClient {
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@Override
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public boolean onConsoleMessage(ConsoleMessage consoleMessage) {
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if (ConsoleMessage.MessageLevel.ERROR.equals(consoleMessage.messageLevel())) {
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GB.toast(consoleMessage.message(), Toast.LENGTH_LONG, GB.ERROR);
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//TODO: show error page
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}
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return super.onConsoleMessage(consoleMessage);
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}
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}
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private static class GBWebClient extends WebViewClient {
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@Override
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public boolean shouldOverrideUrlLoading(WebView view, String url) {
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if (url.startsWith("http://") || url.startsWith("https://")) {
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Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
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i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
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contextWrapper.startActivity(i);
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} else {
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url = url.replaceFirst("^pebblejs://close#", "file:///android_asset/app_config/configure.html?config=true&json=");
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view.loadUrl(url);
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}
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return true;
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}
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}
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private static JSONObject getAppConfigurationKeys(UUID uuid) {
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try {
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File destDir = new File(FileUtils.getExternalFilesDir() + "/pbw-cache");
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File configurationFile = new File(destDir, uuid.toString() + ".json");
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if (configurationFile.exists()) {
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String jsonstring = FileUtils.getStringFromFile(configurationFile);
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JSONObject json = new JSONObject(jsonstring);
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return json.getJSONObject("appKeys");
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}
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} catch (IOException | JSONException e) {
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e.printStackTrace();
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}
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return null;
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}
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private static class JSInterface {
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UUID mUuid;
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GBDevice device;
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public JSInterface(GBDevice device, UUID mUuid) {
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LOG.debug("Creating JS interface");
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this.device = device;
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this.mUuid = mUuid;
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}
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@JavascriptInterface
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public void gbLog(String msg) {
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LOG.debug("WEBVIEW", msg);
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}
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@JavascriptInterface
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public void sendAppMessage(String msg) {
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LOG.debug("from WEBVIEW: " + msg);
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JSONObject knownKeys = getAppConfigurationKeys(this.mUuid);
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try {
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JSONObject in = new JSONObject(msg);
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JSONObject out = new JSONObject();
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String inKey, outKey;
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boolean passKey;
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for (Iterator<String> key = in.keys(); key.hasNext(); ) {
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passKey = false;
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inKey = key.next();
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outKey = null;
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int pebbleAppIndex = knownKeys.optInt(inKey, -1);
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if (pebbleAppIndex != -1) {
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passKey = true;
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outKey = String.valueOf(pebbleAppIndex);
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} else {
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//do not discard integer keys (see https://developer.pebble.com/guides/communication/using-pebblekit-js/ )
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Scanner scanner = new Scanner(inKey);
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if (scanner.hasNextInt() && inKey.equals("" + scanner.nextInt())) {
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passKey = true;
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outKey = inKey;
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}
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}
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if (passKey) {
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Object obj = in.get(inKey);
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if (obj instanceof Boolean) {
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obj = ((Boolean) obj) ? "true" : "false";
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}
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out.put(outKey, obj);
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} else {
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GB.toast("Discarded key " + inKey + ", not found in the local configuration and is not an integer key.", Toast.LENGTH_SHORT, GB.WARN);
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}
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}
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LOG.info("WEBV:" + out.toString());
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GBApplication.deviceService().onAppConfiguration(this.mUuid, out.toString());
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} catch (JSONException e) {
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e.printStackTrace();
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}
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}
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@JavascriptInterface
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public String getActiveWatchInfo() {
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JSONObject wi = new JSONObject();
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try {
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wi.put("firmware", device.getFirmwareVersion());
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wi.put("platform", PebbleUtils.getPlatformName(device.getModel()));
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wi.put("model", PebbleUtils.getModel(device.getModel()));
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//TODO: use real info
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wi.put("language", "en");
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} catch (JSONException e) {
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e.printStackTrace();
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}
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//Json not supported apparently, we need to cast back and forth
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return wi.toString();
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}
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@JavascriptInterface
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public String getAppConfigurationFile() {
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try {
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File destDir = new File(FileUtils.getExternalFilesDir() + "/pbw-cache");
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File configurationFile = new File(destDir, this.mUuid.toString() + "_config.js");
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if (configurationFile.exists()) {
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return "file:///" + configurationFile.getAbsolutePath();
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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return null;
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}
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@JavascriptInterface
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public String getAppStoredPreset() {
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try {
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File destDir = new File(FileUtils.getExternalFilesDir() + "/pbw-cache");
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File configurationFile = new File(destDir, this.mUuid.toString() + "_preset.json");
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if (configurationFile.exists()) {
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return FileUtils.getStringFromFile(configurationFile);
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}
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} catch (IOException e) {
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GB.toast("Error reading presets", Toast.LENGTH_LONG, GB.ERROR);
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e.printStackTrace();
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}
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return null;
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}
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@JavascriptInterface
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public void saveAppStoredPreset(String msg) {
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Writer writer;
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try {
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File destDir = new File(FileUtils.getExternalFilesDir() + "/pbw-cache");
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File presetsFile = new File(destDir, this.mUuid.toString() + "_preset.json");
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writer = new BufferedWriter(new FileWriter(presetsFile));
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writer.write(msg);
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writer.close();
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GB.toast("Presets stored", Toast.LENGTH_SHORT, GB.INFO);
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} catch (IOException e) {
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GB.toast("Error storing presets", Toast.LENGTH_LONG, GB.ERROR);
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e.printStackTrace();
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}
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}
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@JavascriptInterface
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public String getAppUUID() {
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return this.mUuid.toString();
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}
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@JavascriptInterface
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public String getAppLocalstoragePrefix() {
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String prefix = device.getAddress() + this.mUuid.toString();
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try {
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MessageDigest digest = MessageDigest.getInstance("SHA-1");
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byte[] bytes = prefix.getBytes("UTF-8");
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digest.update(bytes, 0, bytes.length);
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bytes = digest.digest();
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final StringBuilder sb = new StringBuilder();
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for (int i = 0; i < bytes.length; i++) {
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sb.append(String.format("%02X", bytes[i]));
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}
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return sb.toString().toLowerCase();
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} catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
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e.printStackTrace();
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return prefix;
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}
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}
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@JavascriptInterface
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public String getWatchToken() {
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//specification says: A string that is guaranteed to be identical for each Pebble device for the same app across different mobile devices. The token is unique to your app and cannot be used to track Pebble devices across applications. see https://developer.pebble.com/docs/js/Pebble/
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return "gb" + this.mUuid.toString();
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}
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}
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}
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