Java Code Examples for com.gargoylesoftware.htmlunit.javascript.AbstractJavaScriptEngine#isScriptRunning()

/**
 * Executes the onchange script code for this element if this is appropriate.
 * This means that the element must have an onchange script, script must be enabled
 * and the change in the element must not have been triggered by a script.
 *
 * @param htmlElement the element that contains the onchange attribute
 * @return the page that occupies this window after this method completes (may or
 *         may not be the same as the original page)
 */
static Page executeOnChangeHandlerIfAppropriate(final HtmlElement htmlElement) {
    final SgmlPage page = htmlElement.getPage();

    final AbstractJavaScriptEngine<?> engine = htmlElement.getPage().getWebClient().getJavaScriptEngine();
    if (engine.isScriptRunning()) {
        return page;
    }
    final ScriptResult scriptResult = htmlElement.fireEvent(Event.TYPE_CHANGE);

    if (page.getWebClient().containsWebWindow(page.getEnclosingWindow())) {
        // may be itself or a newly loaded one
        return page.getEnclosingWindow().getEnclosedPage();
    }

    if (scriptResult != null) {
        // current window doesn't exist anymore
        return page.getWebClient().getCurrentWindow().getEnclosedPage();
    }

    return page;
}
 

/**
 * Executes the onchange script code for this element if this is appropriate.
 * This means that the element must have an onchange script, script must be enabled
 * and the change in the element must not have been triggered by a script.
 *
 * @param htmlElement the element that contains the onchange attribute
 * @return the page that occupies this window after this method completes (may or
 *         may not be the same as the original page)
 */
static Page executeOnChangeHandlerIfAppropriate(final HtmlElement htmlElement) {
    final SgmlPage page = htmlElement.getPage();

    final AbstractJavaScriptEngine<?> engine = htmlElement.getPage().getWebClient().getJavaScriptEngine();
    if (engine.isScriptRunning()) {
        return page;
    }
    final ScriptResult scriptResult = htmlElement.fireEvent(Event.TYPE_CHANGE);

    if (page.getWebClient().containsWebWindow(page.getEnclosingWindow())) {
        // may be itself or a newly loaded one
        return page.getEnclosingWindow().getEnclosedPage();
    }

    if (scriptResult != null) {
        // current window doesn't exist anymore
        return scriptResult.getNewPage();
    }

    return page;
}
 

/**
 * <span style="color:red">INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.</span><br>
 *
 * Called after the node for the {@code frame} or {@code iframe} has been added to the containing page.
 * The node needs to be added first to allow JavaScript in the frame to see the frame in the parent.
 * @throws FailingHttpStatusCodeException if the server returns a failing status code AND the property
 *      {@link com.gargoylesoftware.htmlunit.WebClientOptions#setThrowExceptionOnFailingStatusCode(boolean)} is
 *      set to true
 */

public void loadInnerPage() throws FailingHttpStatusCodeException {
    String source = getSrcAttribute();
    if (source.isEmpty() || StringUtils.startsWithIgnoreCase(source, WebClient.ABOUT_SCHEME)) {
        source = WebClient.ABOUT_BLANK;
    }

    loadInnerPageIfPossible(source);

    final Page enclosedPage = getEnclosedPage();
    if (enclosedPage != null && enclosedPage.isHtmlPage()) {
        final HtmlPage htmlPage = (HtmlPage) enclosedPage;

        final AbstractJavaScriptEngine<?> jsEngine = getPage().getWebClient().getJavaScriptEngine();
        if (jsEngine != null && jsEngine.isScriptRunning()) {
            final PostponedAction action = new PostponedAction(getPage()) {
                @Override
                public void execute() throws Exception {
                    htmlPage.setReadyState(READY_STATE_COMPLETE);
                }
            };
            jsEngine.addPostponedAction(action);
        }
        else {
            htmlPage.setReadyState(READY_STATE_COMPLETE);
        }
    }
}
 

private void loadSrc() {
    loadSrcWhenAddedToPage_ = false;
    final String src = getSrcAttribute();

    final AbstractJavaScriptEngine<?> jsEngine = getPage().getWebClient().getJavaScriptEngine();
    // When src is set from a script, loading is postponed until script finishes
    // in fact this implementation is probably wrong: JavaScript URL should be
    // first evaluated and only loading, when any, should be postponed.
    if (jsEngine == null || !jsEngine.isScriptRunning()
            || src.startsWith(JavaScriptURLConnection.JAVASCRIPT_PREFIX)) {
        loadInnerPageIfPossible(src);
    }
    else {
        final Page pageInFrame = getEnclosedPage();
        final PostponedAction action = new PostponedAction(getPage()) {
            @Override
            public void execute() throws Exception {
                if (!src.isEmpty() && getSrcAttribute().equals(src)) {
                    loadInnerPage();
                }
            }

            @Override
            public boolean isStillAlive() {
                // skip if page in frame has already been changed
                return super.isStillAlive() && pageInFrame == getEnclosedPage();
            }
        };
        jsEngine.addPostponedAction(action);
    }
}
 

/**
 * <span style="color:red">INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.</span><br>
 *
 * Called after the node for the {@code frame} or {@code iframe} has been added to the containing page.
 * The node needs to be added first to allow JavaScript in the frame to see the frame in the parent.
 * @throws FailingHttpStatusCodeException if the server returns a failing status code AND the property
 *      {@link com.gargoylesoftware.htmlunit.WebClientOptions#setThrowExceptionOnFailingStatusCode(boolean)} is
 *      set to true
 */

public void loadInnerPage() throws FailingHttpStatusCodeException {
    String source = getSrcAttribute();
    if (source.isEmpty() || StringUtils.startsWithIgnoreCase(source, WebClient.ABOUT_SCHEME)) {
        source = WebClient.ABOUT_BLANK;
    }

    loadInnerPageIfPossible(source);

    final Page enclosedPage = getEnclosedPage();
    if (enclosedPage != null && enclosedPage.isHtmlPage()) {
        final HtmlPage htmlPage = (HtmlPage) enclosedPage;
        final AbstractJavaScriptEngine<?> jsEngine = getPage().getWebClient().getJavaScriptEngine();
        if (jsEngine.isScriptRunning()) {
            final PostponedAction action = new PostponedAction(getPage()) {
                @Override
                public void execute() throws Exception {
                    htmlPage.setReadyState(READY_STATE_COMPLETE);
                }
            };
            jsEngine.addPostponedAction(action);
        }
        else {
            htmlPage.setReadyState(READY_STATE_COMPLETE);
        }
    }
}
 

private void loadSrc() {
    loadSrcWhenAddedToPage_ = false;
    final String src = getSrcAttribute();

    final AbstractJavaScriptEngine<?> jsEngine = getPage().getWebClient().getJavaScriptEngine();
    // When src is set from a script, loading is postponed until script finishes
    // in fact this implementation is probably wrong: JavaScript URL should be
    // first evaluated and only loading, when any, should be postponed.
    if (!jsEngine.isScriptRunning() || src.startsWith(JavaScriptURLConnection.JAVASCRIPT_PREFIX)) {
        loadInnerPageIfPossible(src);
    }
    else {
        final Page pageInFrame = getEnclosedPage();
        final PostponedAction action = new PostponedAction(getPage()) {
            @Override
            public void execute() throws Exception {
                if (!src.isEmpty() && getSrcAttribute().equals(src)) {
                    loadInnerPage();
                }
            }

            @Override
            public boolean isStillAlive() {
                // skip if page in frame has already been changed
                return super.isStillAlive() && pageInFrame == getEnclosedPage();
            }
        };
        jsEngine.addPostponedAction(action);
    }
}