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Edge.java
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Edge.java
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/*******************************************************************************
* Copyright (c) 2020, 2021 Nikita Nemkin and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Nikita Nemkin <nikita@nemkin.ru> - initial implementation
*******************************************************************************/
package org.eclipse.swt.browser;
import java.net.*;
import java.nio.charset.*;
import java.time.*;
import java.util.*;
import java.util.function.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.ole.win32.*;
import org.eclipse.swt.internal.win32.*;
import org.eclipse.swt.widgets.*;
class Edge extends WebBrowser {
static {
Library.loadLibrary("WebView2Loader");
}
// WebView2Loader.dll compatible version. This is NOT the minimal required version.
static final String SDK_TARGET_VERSION = "99.0.1150.38";
// Display.getData() keys
static final String APPLOCAL_DIR_KEY = "org.eclipse.swt.internal.win32.appLocalDir";
// System.getProperty() keys
static final String BROWSER_DIR_PROP = "org.eclipse.swt.browser.EdgeDir";
static final String BROWSER_ARGS_PROP = "org.eclipse.swt.browser.EdgeArgs";
static final String DATA_DIR_PROP = "org.eclipse.swt.browser.EdgeDataDir";
static final String LANGUAGE_PROP = "org.eclipse.swt.browser.EdgeLanguage";
static final String VERSIONT_PROP = "org.eclipse.swt.browser.EdgeVersion";
private record WebViewEnvironment(ICoreWebView2Environment environment, ArrayList<Edge> instances) {
public WebViewEnvironment(ICoreWebView2Environment environment) {
this (environment, new ArrayList<>());
}
}
private static Map<Display, WebViewEnvironment> webViewEnvironments = new HashMap<>();
ICoreWebView2 webView;
ICoreWebView2_2 webView_2;
ICoreWebView2Controller controller;
ICoreWebView2Settings settings;
ICoreWebView2Environment2 environment2;
WebViewEnvironment containingEnvironment;
static boolean inCallback;
boolean inNewWindow;
HashMap<Long, LocationEvent> navigations = new HashMap<>();
static {
NativeClearSessions = () -> {
ICoreWebView2CookieManager manager = getCookieManager();
if (manager == null) return;
long[] ppv = new long[1];
int hr = callAndWait(ppv, completion -> manager.GetCookies(null, completion));
if (hr != COM.S_OK) error(SWT.ERROR_NO_HANDLES, hr);
ICoreWebView2CookieList cookieList = new ICoreWebView2CookieList(ppv[0]);
int[] count = new int[1], isSession = new int[1];
cookieList.get_Count(count);
for (int i = 0; i < count[0]; i++) {
hr = cookieList.GetValueAtIndex(i, ppv);
if (hr != COM.S_OK) error(SWT.ERROR_NO_HANDLES, hr);
ICoreWebView2Cookie cookie = new ICoreWebView2Cookie(ppv[0]);
cookie.get_IsSession(isSession);
if (isSession[0] != 0) {
manager.DeleteCookie(cookie);
}
cookie.Release();
}
cookieList.Release();
manager.Release();
// Bug in WebView2. DeleteCookie is asynchronous. Wait a short while for it to take effect.
try {
Thread.sleep(5);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
};
NativeGetCookie = () -> {
ICoreWebView2CookieManager manager = getCookieManager();
if (manager == null) return;
char[] uri = stringToWstr(CookieUrl);
long[] ppv = new long[1];
int hr = callAndWait(ppv, completion -> manager.GetCookies(uri, completion));
if (hr != COM.S_OK) error(SWT.ERROR_NO_HANDLES, hr);
ICoreWebView2CookieList cookieList = new ICoreWebView2CookieList(ppv[0]);
int[] count = new int[1];
cookieList.get_Count(count);
for (int i = 0; i < count[0]; i++) {
hr = cookieList.GetValueAtIndex(i, ppv);
if (hr != COM.S_OK) error(SWT.ERROR_NO_HANDLES, hr);
ICoreWebView2Cookie cookie = new ICoreWebView2Cookie(ppv[0]);
cookie.get_Name(ppv);
String name = wstrToString(ppv[0], true);
if (CookieName.equals(name)) {
cookie.get_Value(ppv);
CookieValue = wstrToString(ppv[0], true);
}
cookie.Release();
if (CookieValue != null) {
break;
}
}
cookieList.Release();
manager.Release();
};
NativeSetCookie = () -> {
HttpCookie parser = HttpCookie.parse(CookieValue).get(0);
URL origin;
try {
origin = new URL(CookieUrl);
} catch (MalformedURLException e) {
return;
}
if (parser.getDomain() == null) {
parser.setDomain(origin.getHost());
}
if (parser.getPath() == null) {
parser.setPath(origin.getPath());
}
ICoreWebView2CookieManager manager = getCookieManager();
if (manager == null) return;
char[] name = stringToWstr(parser.getName());
char[] value = stringToWstr(parser.getValue());
char[] domain = stringToWstr(parser.getDomain());
char[] path = stringToWstr(parser.getPath());
long[] ppv = new long[1];
int hr = manager.CreateCookie(name, value, domain, path, ppv);
if (hr != COM.S_OK) {
manager.Release();
return;
}
ICoreWebView2Cookie cookie = new ICoreWebView2Cookie(ppv[0]);
if (parser.getMaxAge() != -1) {
cookie.put_Expires(Instant.now().getEpochSecond() + parser.getMaxAge());
}
cookie.put_IsSecure(parser.getSecure());
cookie.put_IsHttpOnly(parser.isHttpOnly());
hr = manager.AddOrUpdateCookie(cookie);
cookie.Release();
manager.Release();
CookieResult = hr >= COM.S_OK;
};
}
static String wstrToString(long psz, boolean free) {
if (psz == 0) return "";
int len = OS.wcslen(psz);
char[] data = new char[len];
OS.MoveMemory(data, psz, len * Character.BYTES);
if (free) OS.CoTaskMemFree(psz);
return String.valueOf(data);
}
static String bstrToString(long bstr) {
if (bstr == 0) return "";
int len = COM.SysStringLen(bstr);
char[] data = new char[len];
OS.MoveMemory(data, bstr, len * Character.BYTES);
return String.valueOf(data);
}
static char[] stringToWstr(String s) {
return (s != null) ? (s + "\0").toCharArray() : null;
}
static void error(int code, int hr) {
SWT.error(code, null, String.format(" [0x%08x]", hr));
}
static IUnknown newCallback(ICoreWebView2SwtCallback handler) {
long punk = COM.CreateSwtWebView2Callback((arg0, arg1) -> {
inCallback = true;
try {
return handler.Invoke(arg0, arg1);
} finally {
inCallback = false;
}
});
if (punk == 0) error(SWT.ERROR_NO_HANDLES, COM.E_OUTOFMEMORY);
return new IUnknown(punk);
}
IUnknown newHostObject(ICoreWebView2SwtHost handler) {
long pdisp = COM.CreateSwtWebView2Host(handler);
if (pdisp == 0) error(SWT.ERROR_NO_HANDLES, COM.E_OUTOFMEMORY);
return new IUnknown(pdisp);
}
static int callAndWait(long[] ppv, ToIntFunction<IUnknown> callable) {
int[] phr = {COM.S_OK};
IUnknown completion = newCallback((result, pv) -> {
phr[0] = (int)result;
if ((int)result == COM.S_OK) {
ppv[0] = pv;
new IUnknown(pv).AddRef();
}
return COM.S_OK;
});
ppv[0] = 0;
phr[0] = callable.applyAsInt(completion);
// "completion" callback may be called asynchronously,
// so keep processing next OS message that may call it
while (phr[0] == COM.S_OK && ppv[0] == 0) {
processNextOSMessage();
}
completion.Release();
return phr[0];
}
static int callAndWait(String[] pstr, ToIntFunction<IUnknown> callable) {
int[] phr = new int[1];
IUnknown completion = newCallback((result, pszJson) -> {
phr[0] = (int)result;
if ((int)result == COM.S_OK) {
pstr[0] = wstrToString(pszJson, false);
}
return COM.S_OK;
});
pstr[0] = null;
phr[0] = callable.applyAsInt(completion);
// "completion" callback may be called asynchronously,
// so keep processing next OS message that may call it
while (phr[0] == COM.S_OK && pstr[0] == null) {
processNextOSMessage();
}
completion.Release();
return phr[0];
}
/**
* Processes a single OS message using {@link Display#readAndDispatch()}. This
* is required for processing the OS events during browser initialization, since
* Edge browser initialization happens asynchronously.
* <p>
* {@link Display#readAndDisplay()} also processes events scheduled for
* asynchronous execution via {@link Display#asyncExec(Runnable)}. This may
* include events such as the disposal of the browser's parent composite, which
* leads to a failure in browser initialization if processed in between the OS
* events for initialization. Thus, this method does not implement an ordinary
* readAndDispatch loop, but waits for an OS event to be processed.
*/
private static void processNextOSMessage() {
Display display = Display.getCurrent();
MSG msg = new MSG();
while (!OS.PeekMessage (msg, 0, 0, 0, OS.PM_NOREMOVE)) {
display.sleep();
}
display.readAndDispatch();
}
static ICoreWebView2CookieManager getCookieManager() {
WebViewEnvironment environmentWrapper = webViewEnvironments.get(Display.getCurrent());
if (environmentWrapper == null) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT, null, " [WebView2: environment not initialized for current display]");
}
if (environmentWrapper.instances().isEmpty()) {
SWT.error(SWT.ERROR_NOT_IMPLEMENTED, null, " [WebView2: cookie access requires a Browser instance]");
}
Edge instance = environmentWrapper.instances().get(0);
if (instance.webView_2 == null) {
SWT.error(SWT.ERROR_NOT_IMPLEMENTED, null, " [WebView2 version 88+ is required to access cookies]");
}
long[] ppv = new long[1];
int hr = instance.webView_2.get_CookieManager(ppv);
if (hr != COM.S_OK) error(SWT.ERROR_NO_HANDLES, hr);
return new ICoreWebView2CookieManager(ppv[0]);
}
void checkDeadlock() {
// Feature in WebView2. All event handlers, completion handlers
// and JavaScript callbacks are serialized. An event handler waiting
// for a completion of another handler will deadlock. Detect this
// situation and throw an exception instead.
if (inCallback || inNewWindow) {
SWT.error(SWT.ERROR_FAILED_EVALUATE, null, " [WebView2: deadlock detected]");
}
}
WebViewEnvironment createEnvironment() {
Display display = Display.getCurrent();
WebViewEnvironment existingEnvironment = webViewEnvironments.get(display);
if (existingEnvironment != null) return existingEnvironment;
// Gather customization properties
String browserDir = System.getProperty(BROWSER_DIR_PROP);
String dataDir = System.getProperty(DATA_DIR_PROP);
String browserArgs = System.getProperty(BROWSER_ARGS_PROP);
String language = System.getProperty(LANGUAGE_PROP);
if (dataDir == null) {
// WebView2 will append "\\EBWebView"
dataDir = (String)display.getData(APPLOCAL_DIR_KEY);
}
// Initialize options
long pOpts = COM.CreateSwtWebView2Options();
if (pOpts == 0) error(SWT.ERROR_NO_HANDLES, COM.E_OUTOFMEMORY);
ICoreWebView2EnvironmentOptions options = new ICoreWebView2EnvironmentOptions(pOpts);
char[] pVersion = stringToWstr(SDK_TARGET_VERSION);
options.put_TargetCompatibleBrowserVersion(pVersion);
if (browserArgs != null) {
char[] pBrowserArgs = stringToWstr(browserArgs);
options.put_AdditionalBrowserArguments(pBrowserArgs);
}
if (language != null) {
char[] pLanguage = stringToWstr(language);
options.put_Language(pLanguage);
}
// Create the environment
char[] pBrowserDir = stringToWstr(browserDir);
char[] pDataDir = stringToWstr(dataDir);
long[] ppv = new long[1];
int hr = callAndWait(ppv, completion -> COM.CreateCoreWebView2EnvironmentWithOptions(
pBrowserDir, pDataDir, options.getAddress(), completion.getAddress()));
options.Release();
if (hr == OS.HRESULT_FROM_WIN32(OS.ERROR_FILE_NOT_FOUND)) {
SWT.error(SWT.ERROR_NOT_IMPLEMENTED, null, " [WebView2 runtime not found]");
}
if (hr != COM.S_OK) error(SWT.ERROR_NO_HANDLES, hr);
ICoreWebView2Environment environment = new ICoreWebView2Environment(ppv[0]);
WebViewEnvironment environmentWrapper = new WebViewEnvironment(environment);
// Save Edge version for reporting
long[] ppVersion = new long[1];
environment.get_BrowserVersionString(ppVersion);
String version = wstrToString(ppVersion[0], true);
System.setProperty(VERSIONT_PROP, version);
// Destroy the environment on app exit.
display.disposeExec(() -> {
for (Edge instance : environmentWrapper.instances()) {
instance.browserDispose(null);
}
environment.Release();
webViewEnvironments.remove(display);
});
webViewEnvironments.put(display, environmentWrapper);
return environmentWrapper;
}
@Override
public void create(Composite parent, int style) {
checkDeadlock();
containingEnvironment = createEnvironment();
long[] ppv = new long[1];
int hr = containingEnvironment.environment().QueryInterface(COM.IID_ICoreWebView2Environment2, ppv);
if (hr == COM.S_OK) environment2 = new ICoreWebView2Environment2(ppv[0]);
hr = callAndWait(ppv, completion -> containingEnvironment.environment().CreateCoreWebView2Controller(browser.handle, completion));
switch (hr) {
case COM.S_OK:
break;
case COM.E_WRONG_THREAD:
error(SWT.ERROR_THREAD_INVALID_ACCESS, hr);
break;
default:
error(SWT.ERROR_NO_HANDLES, hr);
}
controller = new ICoreWebView2Controller(ppv[0]);
controller.get_CoreWebView2(ppv);
webView = new ICoreWebView2(ppv[0]);
webView.get_Settings(ppv);
settings = new ICoreWebView2Settings(ppv[0]);
hr = webView.QueryInterface(COM.IID_ICoreWebView2_2, ppv);
if (hr == COM.S_OK) webView_2 = new ICoreWebView2_2(ppv[0]);
long[] token = new long[1];
IUnknown handler;
handler = newCallback(this::handleCloseRequested);
webView.add_WindowCloseRequested(handler, token);
handler.Release();
handler = newCallback(this::handleNavigationStarting);
webView.add_NavigationStarting(handler, token);
handler.Release();
handler = newCallback(this::handleFrameNavigationStarting);
webView.add_FrameNavigationStarting(handler, token);
handler.Release();
handler = newCallback(this::handleNavigationCompleted);
webView.add_NavigationCompleted(handler, token);
handler.Release();
handler = newCallback(this::handleFrameNavigationCompleted);
webView.add_FrameNavigationCompleted(handler, token);
handler.Release();
handler = newCallback(this::handleDocumentTitleChanged);
webView.add_DocumentTitleChanged(handler, token);
handler.Release();
handler = newCallback(this::handleNewWindowRequested);
webView.add_NewWindowRequested(handler, token);
handler.Release();
handler = newCallback(this::handleSourceChanged);
webView.add_SourceChanged(handler, token);
handler.Release();
handler = newCallback(this::handleMoveFocusRequested);
controller.add_MoveFocusRequested(handler, token);
handler.Release();
if (webView_2 != null) {
handler = newCallback(this::handleDOMContentLoaded);
webView_2.add_DOMContentLoaded(handler, token);
handler.Release();
}
IUnknown hostDisp = newHostObject(this::handleCallJava);
long[] hostObj = { COM.VT_DISPATCH, hostDisp.getAddress(), 0 }; // VARIANT
webView.AddHostObjectToScript("swt\0".toCharArray(), hostObj);
hostDisp.Release();
browser.addListener(SWT.Dispose, this::browserDispose);
browser.addListener(SWT.FocusIn, this::browserFocusIn);
browser.addListener(SWT.Resize, this::browserResize);
browser.addListener(SWT.Move, this::browserMove);
containingEnvironment.instances().add(this);
}
void browserDispose(Event event) {
containingEnvironment.instances.remove(this);
if (webView_2 != null) webView_2.Release();
if (environment2 != null) environment2.Release();
settings.Release();
webView.Release();
webView_2 = null;
environment2 = null;
settings = null;
webView = null;
// Bug in WebView2. Closing the controller from an event handler results
// in a crash. The fix is to delay the closure with asyncExec.
if (inCallback) {
ICoreWebView2Controller controller1 = controller;
controller.put_IsVisible(false);
browser.getDisplay().asyncExec(() -> {
controller1.Close();
controller1.Release();
});
} else {
controller.Close();
controller.Release();
}
controller = null;
}
void browserFocusIn(Event event) {
// TODO: directional traversals
controller.MoveFocus(COM.COREWEBVIEW2_MOVE_FOCUS_REASON_PROGRAMMATIC);
}
void browserMove(Event event) {
controller.NotifyParentWindowPositionChanged();
}
void browserResize(Event event) {
RECT rect = new RECT();
OS.GetClientRect(browser.handle, rect);
controller.put_Bounds(rect);
controller.put_IsVisible(true);
}
@Override
public Object evaluate(String script) throws SWTException {
checkDeadlock();
// Feature in WebView2. ExecuteScript works regardless of IsScriptEnabled setting.
// Disallow programmatic execution manually.
if (!jsEnabled) return null;
String script2 = "(function() {try { " + script + " } catch (e) { return '" + ERROR_ID + "' + e.message; } })();\0";
String[] pJson = new String[1];
int hr = callAndWait(pJson, completion -> webView.ExecuteScript(script2.toCharArray(), completion));
if (hr != COM.S_OK) error(SWT.ERROR_FAILED_EVALUATE, hr);
Object data = JSON.parse(pJson[0]);
if (data instanceof String && ((String) data).startsWith(ERROR_ID)) {
String errorMessage = ((String) data).substring(ERROR_ID.length());
throw new SWTException (SWT.ERROR_FAILED_EVALUATE, errorMessage);
}
return data;
}
@Override
public boolean execute(String script) {
// Feature in WebView2. ExecuteScript works regardless of IsScriptEnabled setting.
// Disallow programmatic execution manually.
if (!jsEnabled) return false;
IUnknown completion = newCallback((long result, long json) -> COM.S_OK);
int hr = webView.ExecuteScript(stringToWstr(script), completion);
completion.Release();
return hr == COM.S_OK;
}
@Override
public String getBrowserType() {
return "edge";
}
@Override
String getJavaCallDeclaration() {
return "if (!window.callJava) { window.callJava = function(index, token, args) {\n"
+"return JSON.parse(window.chrome.webview.hostObjects.sync.swt.CallJava(index, token, JSON.stringify(args)));\n"
+"}};\n";
}
@Override
public String getText() {
return (String)evaluate("return document.documentElement.outerHTML;");
}
@Override
public String getUrl() {
long ppsz[] = new long[1];
webView.get_Source(ppsz);
return wstrToString(ppsz[0], true);
}
int handleCloseRequested(long pView, long pArgs) {
browser.getDisplay().asyncExec(() -> {
if (browser.isDisposed()) return;
WindowEvent event = new WindowEvent(browser);
event.display = browser.getDisplay();
event.widget = browser;
for (CloseWindowListener listener : closeWindowListeners) {
listener.close(event);
if (browser.isDisposed()) return;
}
browser.dispose();
});
return COM.S_OK;
}
int handleDocumentTitleChanged(long pView, long pArgs) {
long[] ppsz = new long[1];
webView.get_DocumentTitle(ppsz);
String title = wstrToString(ppsz[0], true);
browser.getDisplay().asyncExec(() -> {
if (browser.isDisposed()) return;
TitleEvent event = new TitleEvent(browser);
event.display = browser.getDisplay();
event.widget = browser;
event.title = title;
for (TitleListener listener : titleListeners) {
listener.changed(event);
if (browser.isDisposed()) return;
}
});
return COM.S_OK;
}
long handleCallJava(int index, long bstrToken, long bstrArgsJson) {
Object result = null;
String token = bstrToString(bstrToken);
BrowserFunction function = functions.get(index);
if (function != null && token.equals (function.token)) {
try {
String argsJson = bstrToString(bstrArgsJson);
Object args = (Object[]) JSON.parse(argsJson.toCharArray());
result = function.function ((Object[]) args);
} catch (Throwable e) {
result = WebBrowser.CreateErrorString(e.getLocalizedMessage());
}
}
String json = JSON.stringify(result);
return COM.SysAllocStringLen(json.toCharArray(), json.length());
}
int handleFrameNavigationStarting(long pView, long pArgs) {
return handleNavigationStarting(pView, pArgs, false);
}
int handleNavigationStarting(long pView, long pArgs) {
return handleNavigationStarting(pView, pArgs, true);
}
int handleNavigationStarting(long pView, long pArgs, boolean top) {
ICoreWebView2NavigationStartingEventArgs args = new ICoreWebView2NavigationStartingEventArgs(pArgs);
long[] ppszUrl = new long[1];
int hr = args.get_Uri(ppszUrl);
if (hr != COM.S_OK) return hr;
String url = wstrToString(ppszUrl[0], true);
long[] pNavId = new long[1];
args.get_NavigationId(pNavId);
LocationEvent event = new LocationEvent(browser);
event.display = browser.getDisplay();
event.widget = browser;
event.location = url;
event.top = top;
event.doit = true;
for (LocationListener listener : locationListeners) {
listener.changing(event);
if (browser.isDisposed()) return COM.S_OK;
}
if (event.doit) {
// Save location and top for all events that use navigationId.
navigations.put(pNavId[0], event);
jsEnabled = jsEnabledOnNextPage;
settings.put_IsScriptEnabled(jsEnabled);
// Register browser functions in the new document.
if (!functions.isEmpty()) {
StringBuilder sb = new StringBuilder();
for (BrowserFunction function : functions.values()) {
sb.append(function.functionString);
}
execute(sb.toString());
}
} else {
args.put_Cancel(true);
}
return COM.S_OK;
}
int handleSourceChanged(long pView, long pArgs) {
// Feature in WebView2. Navigations to data URIs set the Source
// to an empty string. Navigations with NavigateToString set the Source
// to about:blank. Initial Source is about:blank. If Source value
// is the same between navigations, SourceChanged isn't fired.
// TODO: emit missing location changed events
long[] ppsz = new long[1];
int hr = webView.get_Source(ppsz);
if (hr != COM.S_OK) return hr;
String url = wstrToString(ppsz[0], true);
browser.getDisplay().asyncExec(() -> {
if (browser.isDisposed()) return;
LocationEvent event = new LocationEvent(browser);
event.display = browser.getDisplay();
event.widget = browser;
event.location = url;
event.top = true;
for (LocationListener listener : locationListeners) {
listener.changed(event);
if (browser.isDisposed()) return;
}
});
return COM.S_OK;
}
void sendProgressCompleted() {
browser.getDisplay().asyncExec(() -> {
if (browser.isDisposed()) return;
ProgressEvent event = new ProgressEvent(browser);
event.display = browser.getDisplay();
event.widget = browser;
for (ProgressListener listener : progressListeners) {
listener.completed(event);
if (browser.isDisposed()) return;
}
});
}
int handleDOMContentLoaded(long pView, long pArgs) {
ICoreWebView2DOMContentLoadedEventArgs args = new ICoreWebView2DOMContentLoadedEventArgs(pArgs);
long[] pNavId = new long[1];
args.get_NavigationId(pNavId);
LocationEvent startEvent = navigations.get(pNavId[0]);
if (startEvent != null && startEvent.top) {
sendProgressCompleted();
}
return COM.S_OK;
}
int handleNavigationCompleted(long pView, long pArgs) {
return handleNavigationCompleted(pView, pArgs, true);
}
int handleFrameNavigationCompleted(long pView, long pArgs) {
return handleNavigationCompleted(pView, pArgs, false);
}
int handleNavigationCompleted(long pView, long pArgs, boolean top) {
ICoreWebView2NavigationCompletedEventArgs args = new ICoreWebView2NavigationCompletedEventArgs(pArgs);
long[] pNavId = new long[1];
args.get_NavigationId(pNavId);
LocationEvent startEvent = navigations.remove(pNavId[0]);
if (webView_2 == null && startEvent != null && startEvent.top) {
// If DOMContentLoaded isn't available, fire
// ProgressListener.completed from here.
sendProgressCompleted();
}
return COM.S_OK;
}
void updateWindowFeatures(ICoreWebView2NewWindowRequestedEventArgs args, WindowEvent event) {
long[] ppv = new long[1];
int hr = args.get_WindowFeatures(ppv);
if (hr != COM.S_OK) return;
ICoreWebView2WindowFeatures features = new ICoreWebView2WindowFeatures(ppv[0]);
int[] px = new int[1], py = new int[1];
features.get_HasPosition(px);
if (px[0] != 0) {
features.get_Left(px);
features.get_Top(py);
event.location = new Point(px[0], py[0]);
}
features.get_HasSize(px);
if (px[0] != 0) {
features.get_Width(px);
features.get_Height(py);
event.size = new Point(px[0], py[0]);
}
// event.addressBar = ???
features.get_ShouldDisplayMenuBar(px);
event.menuBar = px[0] != 0;
features.get_ShouldDisplayStatus(px);
event.statusBar = px[0] != 0;
features.get_ShouldDisplayToolbar(px);
event.toolBar = px[0] != 0;
}
int handleNewWindowRequested(long pView, long pArgs) {
ICoreWebView2NewWindowRequestedEventArgs args = new ICoreWebView2NewWindowRequestedEventArgs(pArgs);
args.AddRef();
long[] ppv = new long[1];
args.GetDeferral(ppv);
ICoreWebView2Deferral deferral = new ICoreWebView2Deferral(ppv[0]);
inNewWindow = true;
browser.getDisplay().asyncExec(() -> {
try {
if (browser.isDisposed()) return;
WindowEvent openEvent = new WindowEvent(browser);
openEvent.display = browser.getDisplay();
openEvent.widget = browser;
openEvent.required = false;
for (OpenWindowListener openListener : openWindowListeners) {
openListener.open(openEvent);
if (browser.isDisposed()) return;
}
if (openEvent.browser != null && !openEvent.browser.isDisposed()) {
WebBrowser other = openEvent.browser.webBrowser;
args.put_Handled(true);
if (other instanceof Edge) {
args.put_NewWindow(((Edge)other).webView.getAddress());
// Send show event to the other browser.
WindowEvent showEvent = new WindowEvent (other.browser);
showEvent.display = browser.getDisplay();
showEvent.widget = other.browser;
updateWindowFeatures(args, showEvent);
for (VisibilityWindowListener showListener : other.visibilityWindowListeners) {
showListener.show(showEvent);
if (other.browser.isDisposed()) return;
}
}
} else if (openEvent.required) {
args.put_Handled(true);
}
} finally {
deferral.Complete();
deferral.Release();
args.Release();
inNewWindow = false;
}
});
return COM.S_OK;
}
int handleMoveFocusRequested(long pView, long pArgs) {
ICoreWebView2MoveFocusRequestedEventArgs args = new ICoreWebView2MoveFocusRequestedEventArgs(pArgs);
int[] pReason = new int[1];
args.get_Reason(pReason);
args.put_Handled(true);
switch (pReason[0]) {
case COM.COREWEBVIEW2_MOVE_FOCUS_REASON_NEXT:
browser.traverse(SWT.TRAVERSE_TAB_NEXT);
break;
case COM.COREWEBVIEW2_MOVE_FOCUS_REASON_PREVIOUS:
browser.traverse(SWT.TRAVERSE_TAB_PREVIOUS);
break;
}
return COM.S_OK;
}
@Override
public boolean isBackEnabled() {
int[] pval = new int[1];
webView.get_CanGoBack(pval);
return pval[0] != 0;
}
@Override
public boolean isForwardEnabled() {
int[] pval = new int[1];
webView.get_CanGoForward(pval);
return pval[0] != 0;
}
@Override
public boolean back() {
// Feature in WebView2. GoBack returns S_OK even when CanGoBack is FALSE.
return isBackEnabled() && webView.GoBack() == COM.S_OK;
}
@Override
public boolean forward() {
// Feature in WebView2. GoForward returns S_OK even when CanGoForward is FALSE.
return isForwardEnabled() && webView.GoForward() == COM.S_OK;
}
@Override
public void refresh() {
webView.Reload();
}
@Override
public void stop() {
webView.Stop();
}
@Override
public boolean setText(String html, boolean trusted) {
char[] data = new char[html.length() + 1];
html.getChars(0, html.length(), data, 0);
return webView.NavigateToString(data) == COM.S_OK;
}
@Override
public boolean setUrl(String url, String postData, String[] headers) {
// Feature in WebView2. Partial URLs like "www.example.com" are not accepted.
// Prepend the protocol if it's missing.
if (!url.matches("[a-z][a-z0-9+.-]*:.*")) {
url = "http://" + url;
}
int hr;
char[] pszUrl = stringToWstr(url);
if (postData != null || headers != null) {
if (environment2 == null || webView_2 == null) {
SWT.error(SWT.ERROR_NOT_IMPLEMENTED, null, " [WebView2 version 88+ is required to set postData and headers]");
}
long[] ppRequest = new long[1];
char[] pszMethod = null;
char[] pszHeaders = null;
IStream stream = null;
if (postData != null) {
pszMethod = "POST\0".toCharArray();
byte[] postDataBytes = postData.getBytes(StandardCharsets.UTF_8);
long pStream = COM.SHCreateMemStream(postDataBytes, postData.length());
if (pStream == 0) error(SWT.ERROR_NO_HANDLES, COM.E_OUTOFMEMORY);
stream = new IStream(pStream);
} else {
pszMethod = "GET\0".toCharArray();
}
if (headers != null) {
String hblock = String.join("\r\n", Arrays.asList(headers));
pszHeaders = new char[hblock.length() + 1];
hblock.getChars(0, hblock.length(), pszHeaders, 0);
}
hr = environment2.CreateWebResourceRequest(pszUrl, pszMethod, stream, pszHeaders, ppRequest);
if (stream != null) stream.Release();
if (hr != COM.S_OK) error(SWT.ERROR_NO_HANDLES, hr);
IUnknown request = new IUnknown(ppRequest[0]);
hr = webView_2.NavigateWithWebResourceRequest(request);
request.Release();
} else {
hr = webView.Navigate(pszUrl);
}
return hr == COM.S_OK;
}
}