Examples of netscape.javascript.JSObject

netscape.javascript.JSObject
JSObject allows Java to manipulate objects that are defined in JavaScript. Values passed from Java to JavaScript are converted as follows:
- JSObject is converted to the original JavaScript object
- Any other Java object is converted to a JavaScript wrapper, which can be used to access methods and fields of the java object. Converting this wrapper to a string will call the toString method on the original object, converting to a number will call the doubleValue method if possible and fail otherwise. Converting to a boolean will try to call the booleanValue method in the same way.
- Java arrays are wrapped with a JavaScript object that understands array.length and array[index]
- A Java boolean is converted to a JavaScript boolean
- Java byte, char, short, int, long, float, and double are converted to JavaScript numbers
Values passed from JavaScript to Java are converted as follows:
- objects which are wrappers around java objects are unwrapped
- other objects are wrapped with a JSObject
- strings, numbers and booleans are converted to String, Double, and Boolean objects respectively
This means that all JavaScript values show up as some kind of java.lang.Object in Java. In order to make much use of them, you will have to cast them to the appropriate subclass of Object, e.g. (String) window.getMember("name"); or (JSObject) window.getMember("document");.

    if (nodeId == null)
      return null;
    // Retrieve Node ...
    // First try to find by ID
    Object[] idArgs = { nodeId };
    JSObject tryNode = null;
    try {
      JSObject jsoWindow = JSObject.getWindow(appletWrapper);
      JSObject jsoDocument = (JSObject) jsoWindow.getMember("document");
      tryNode = (JSObject) jsoDocument.call("getElementById", idArgs);


      // But that relies on a well-formed CML DTD specifying ID search.
      // Otherwise, search all cml:cml nodes.
      if (tryNode == null) {
        Object[] searchArgs = { "http://www.xml-cml.org/schema/cml2/core",
            "cml" };
        JSObject tryNodeList = (JSObject) jsoDocument.call(
            "getElementsByTagNameNS", searchArgs);
        if (tryNodeList != null) {
          for (int i = 0; i < ((Number) tryNodeList.getMember("length"))
              .intValue(); i++) {
            tryNode = (JSObject) tryNodeList.getSlot(i);
            Object[] idArg = { "id" };
            String idValue = (String) tryNode.call("getAttribute", idArg);
            if (nodeId.equals(idValue))
              break;
            tryNode = null;

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        return;
      }
      if (!doCallback || !mayScript)
        return;
      try {
        JSObject jsoWindow = JSObject.getWindow(appletWrapper);
        if (callback.equals("alert"))
          jsoWindow.call(callback, new Object[] { strInfo });
        else if (callback.length() > 0)
          jsoWindow.call(callback, data);
      } catch (Exception e) {
        if (!haveNotifiedError)
          if (Logger.debugging) {
            Logger.debug(JmolConstants.getCallbackName(type)
                + " call error to " + callback + ": " + e);

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    private String notifySync(String info, String appletName) {
      String syncCallback = callbacks[JmolConstants.CALLBACK_SYNC];
      if (!mayScript || syncCallback == null)
        return info;
      try {
        JSObject jsoWindow = JSObject.getWindow(appletWrapper);
        if (syncCallback.length() > 0)
          return "" + jsoWindow.call(syncCallback, new Object[] { htmlName,
              info, appletName });
      } catch (Exception e) {
        if (!haveNotifiedError)
          if (Logger.debugging) {
            Logger.debug("syncCallback call error to " + syncCallback + ": "

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      if (pt >= 0)
        return sendScript(strEval.substring(pt + 1), strEval.substring(0, pt),
            false, false);
      if (!haveDocumentAccess)
        return "NO EVAL ALLOWED";
      JSObject jsoWindow = null;
      JSObject jsoDocument = null;
      try {
        jsoWindow = JSObject.getWindow(appletWrapper);
        jsoDocument = (JSObject) jsoWindow.getMember("document");
      } catch (Exception e) {
        if (Logger.debugging)
          Logger.debug(" error setting jsoWindow or jsoDocument:" + jsoWindow
              + ", " + jsoDocument);
        return "NO EVAL ALLOWED";
      }
      if (callbacks[JmolConstants.CALLBACK_EVAL] != null) {
        notifyCallback(JmolConstants.CALLBACK_EVAL, new Object[] { null,
            strEval });
        return "";
      }
      try {
        //System.out.println(jsoDocument.eval("!!_jmol.noEval"));
        if (!haveDocumentAccess
            || ((Boolean) jsoDocument.eval("!!_jmol.noEval")).booleanValue())
          return "NO EVAL ALLOWED";
      } catch (Exception e) {
        Logger
            .error("# no _jmol in evaluating " + strEval + ":" + e.toString());
        return "";
      }
      try {
        return "" + jsoDocument.eval(strEval);
      } catch (Exception e) {
        Logger.error("# error evaluating " + strEval + ":" + e.toString());
      }
      return "";
    }

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      //System.out.println("functionXY" + nX + " " + nY  + " " + functionName);
      float[][] fxy = new float[Math.abs(nX)][Math.abs(nY)];
      if (!mayScript || nX == 0 || nY == 0)
        return fxy;
      try {
        JSObject jsoWindow = JSObject.getWindow(appletWrapper);
        if (nX > 0 && nY > 0) { // fill with individual function calls (slow)
          for (int i = 0; i < nX; i++)
            for (int j = 0; j < nY; j++) {
              fxy[i][j] = ((Double) jsoWindow.call(functionName, new Object[] {
                  htmlName, new Integer(i), new Integer(j) })).floatValue();
            }
        } else if (nY > 0) { // fill with parsed values from a string (pretty fast)
          String data = (String) jsoWindow.call(functionName, new Object[] {
              htmlName, new Integer(nX), new Integer(nY) });
          //System.out.println(data);
          nX = Math.abs(nX);
          float[] fdata = new float[nX * nY];
          Parser.parseStringInfestedFloatArray(data, null, fdata);
          for (int i = 0, ipt = 0; i < nX; i++) {
            for (int j = 0; j < nY; j++, ipt++) {
              fxy[i][j] = fdata[ipt];
            }
          }
        } else { // fill float[][] directly using JavaScript
          jsoWindow.call(functionName, new Object[] { htmlName,
              new Integer(nX), new Integer(nY), fxy });
        }
      } catch (Exception e) {
        Logger.error("Exception " + e.getMessage() + " with nX, nY: " + nX
            + " " + nY);

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    public float[][][] functionXYZ(String functionName, int nX, int nY, int nZ) {
      float[][][] fxyz = new float[Math.abs(nX)][Math.abs(nY)][Math.abs(nZ)];
      if (!mayScript || nX == 0 || nY == 0 || nZ == 0)
        return fxyz;
      try {
        JSObject jsoWindow = JSObject.getWindow(appletWrapper);
       jsoWindow.call(functionName, new Object[] { htmlName,
              new Integer(nX), new Integer(nY), new Integer(nZ), fxyz }); 
      } catch (Exception e) {
        Logger.error("Exception " + e.getMessage() + " for " + functionName + " with nX, nY, nZ: " + nX
            + " " + nY + " " + nZ);
      }

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    super(element, data, dataPath);


                                // fill the optionList value with the various
    optionList = new Vector();  // OPTIONs that are a part of this SELECT tag.
    formOptions = (JSObject) element.getMember("options");
    JSObject option;
    int numOptions = NSFieldManager.intValue(formOptions.getMember("length"));
    for (int optIdx = 0;   optIdx < numOptions;   optIdx++)
      optionList.addElement(getOptionValue(formOptions, optIdx));


    if (variantValue != null) paint();

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    return (String) optionList.elementAt(idx);
  }


  private static String getOptionValue(JSObject formOptions, int idx) {
    JSObject option = (JSObject) formOptions.getSlot(idx);
    String result = (String) option.getMember("value");
    if (result == null || result.trim().length() == 0) {
      result = (String) option.getMember("text");
      if (result != null) result = result.trim();
    }


    return result;
  }

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    this.data = data;
    this.dataPath = dataPath;


    debug("get document...");
    JSObject document = (JSObject) window.getMember("document");
    debug("get forms...");
    JSObject formList = (JSObject) document.getMember("forms");


    // Build an internal list of all the elements on the form. (This
    // is necessary because otherwise Netscape 6 has a nasty habit of
    // reordering the list of elements in the form as we initialize
    // them.)
    Vector allElements = new Vector();
    if (formList != null) {
      debug("get forms.length...");
      int numForms = intValue(formList.getMember("length"));
      for (int formIdx = 0;   formIdx < numForms; formIdx++) {
        debug("get a form...");
        JSObject form = (JSObject) formList.getSlot(formIdx);
        debug("get elements...");
        JSObject elementList = (JSObject) form.getMember("elements");
        debug("get elements.length...");
        int numElements = intValue(elementList.getMember("length"));
        for (int elementIdx = 0;  elementIdx < numElements;  elementIdx++) {
          if (!isRunning) return; // abort if we have been terminated
          debug("add an element...");
          allElements.addElement(elementList.getSlot(elementIdx));
        }
      }
    }


      // Discard any previous input listeners

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    this.data = data;
    this.dataPath = dataPath;


    debug("get document...");
    JSObject document = (JSObject) window.getMember("document");
    debug("get forms...");
    JSObject formList = (JSObject) document.getMember("forms");


    // Build an internal list of all the elements on the form. (This
    // is necessary because otherwise Netscape 6 has a nasty habit of
    // reordering the list of elements in the form as we initialize
    // them.)
    Vector allElements = new Vector();
    if (formList != null) {
      debug("get forms.length...");
      int numForms = intValue(formList.getMember("length"));
      for (int formIdx = 0;   formIdx < numForms; formIdx++) {
        debug("get a form...");
        JSObject form = (JSObject) formList.getSlot(formIdx);
        debug("get elements...");
        JSObject elementList = (JSObject) form.getMember("elements");
        debug("get elements.length...");
        int numElements = intValue(elementList.getMember("length"));
        for (int elementIdx = 0;  elementIdx < numElements;  elementIdx++) {
          if (!isRunning) return; // abort if we have been terminated
          debug("add an element...");
          allElements.addElement(elementList.getSlot(elementIdx));
        }
      }
    }


      // Discard any previous input listeners

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