Java Code Examples for net.sourceforge.htmlunit.corejs.javascript.Context#toNumber()

/**
 * Deletes the cell at the specified index in the element's cells collection. If the index
 * is -1 (or while simulating IE, when there is no index specified), then the last cell is deleted.
 * @see <a href="http://msdn.microsoft.com/en-us/library/ms536406.aspx">MSDN Documentation</a>
 * @see <a href="http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109/html.html#ID-11738598">W3C DOM Level2</a>
 * @param index specifies the cell to delete.
 */
@JsxFunction
public void deleteCell(final Object index) {
    int position = -1;
    if (!Undefined.isUndefined(index)) {
        position = (int) Context.toNumber(index);
    }
    else if (getBrowserVersion().hasFeature(JS_TABLE_ROW_DELETE_CELL_REQUIRES_INDEX)) {
        throw Context.reportRuntimeError("No enough arguments");
    }

    final HtmlTableRow htmlRow = (HtmlTableRow) getDomNodeOrDie();

    if (position == -1) {
        position = htmlRow.getCells().size() - 1;
    }
    final boolean indexValid = position >= -1 && position <= htmlRow.getCells().size();
    if (!indexValid) {
        throw Context.reportRuntimeError("Index or size is negative or greater than the allowed amount");
    }

    htmlRow.getCell(position).remove();
}
 

/**
 * Deletes the cell at the specified index in the element's cells collection. If the index
 * is -1 (or while simulating IE, when there is no index specified), then the last cell is deleted.
 * @see <a href="http://msdn.microsoft.com/en-us/library/ms536406.aspx">MSDN Documentation</a>
 * @see <a href="http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109/html.html#ID-11738598">W3C DOM Level2</a>
 * @param index specifies the cell to delete.
 */
@JsxFunction
public void deleteCell(final Object index) {
    int position = -1;
    if (index != Undefined.instance) {
        position = (int) Context.toNumber(index);
    }
    else if (getBrowserVersion().hasFeature(JS_TABLE_ROW_DELETE_CELL_REQUIRES_INDEX)) {
        throw Context.reportRuntimeError("No enough arguments");
    }

    final HtmlTableRow htmlRow = (HtmlTableRow) getDomNodeOrDie();

    if (position == -1) {
        position = htmlRow.getCells().size() - 1;
    }
    final boolean indexValid = position >= -1 && position <= htmlRow.getCells().size();
    if (!indexValid) {
        throw Context.reportRuntimeError("Index or size is negative or greater than the allowed amount");
    }

    htmlRow.getCell(position).remove();
}
 

private static org.w3c.dom.traversal.NodeFilter createFilterWrapper(final Scriptable filter,
        final boolean filterFunctionOnly) {
    org.w3c.dom.traversal.NodeFilter filterWrapper = null;
    if (filter != null) {
        filterWrapper = new org.w3c.dom.traversal.NodeFilter() {
            @Override
            public short acceptNode(final org.w3c.dom.Node n) {
                final Object[] args = new Object[] {((DomNode) n).getScriptableObject()};
                final Object response;
                if (filter instanceof Callable) {
                    response = ((Callable) filter).call(Context.getCurrentContext(), filter, filter, args);
                }
                else {
                    if (filterFunctionOnly) {
                        throw Context.reportRuntimeError("only a function is allowed as filter");
                    }
                    response = ScriptableObject.callMethod(filter, "acceptNode", args);
                }
                return (short) Context.toNumber(response);
            }
        };
    }
    return filterWrapper;
}
 

/**
 * Sets the value of the {@code span} property.
 * @param span the value of the {@code span} property
 */
@JsxSetter
public void setSpan(final Object span) {
    final double d = Context.toNumber(span);
    int i = (int) d;
    if (i < 1) {
        if (getBrowserVersion().hasFeature(JS_TABLE_SPAN_THROWS_EXCEPTION_IF_INVALID)) {
            final Exception e = new Exception("Cannot set the span property to invalid value: " + span);
            Context.throwAsScriptRuntimeEx(e);
        }
        else {
            i = 1;
        }
    }
    getDomNodeOrDie().setAttribute("span", Integer.toString(i));
}
 

/**
 * Inserts a new row at the specified index in the element's row collection. If the index
 * is -1 or there is no index specified, then the row is appended at the end of the
 * element's row collection.
 * @see <a href="http://msdn.microsoft.com/en-us/library/ms536457.aspx">MSDN Documentation</a>
 * @param index specifies where to insert the row in the rows collection.
 *        The default value is -1, which appends the new row to the end of the rows collection
 * @return the newly-created row
 */
@JsxFunction
public Object insertRow(final Object index) {
    int rowIndex = -1;
    if (index != Undefined.instance) {
        rowIndex = (int) Context.toNumber(index);
    }
    final HTMLCollection rows = (HTMLCollection) getRows();
    final int rowCount = rows.getLength();
    final int r;
    if (rowIndex == -1 || rowIndex == rowCount) {
        r = Math.max(0, rowCount);
    }
    else {
        r = rowIndex;
    }

    if (r < 0 || r > rowCount) {
        throw Context.reportRuntimeError("Index or size is negative or greater than the allowed amount "
                + "(index: " + rowIndex + ", " + rowCount + " rows)");
    }

    return insertRow(r);
}
 

/**
 * Returns the item or items corresponding to the specified index or key.
 * @param index the index or key corresponding to the element or elements to return
 * @return the element or elements corresponding to the specified index or key
 * @see <a href="http://msdn.microsoft.com/en-us/library/ms536460.aspx">MSDN doc</a>
 */
@Override
public Object item(final Object index) {
    if (index instanceof String && getBrowserVersion().hasFeature(HTMLCOLLECTION_ITEM_SUPPORTS_ID_SEARCH_ALSO)) {
        final String name = (String) index;
        final Object result = namedItem(name);
        return result;
    }

    int idx = 0;
    final Double doubleValue = Context.toNumber(index);
    if (!doubleValue.isNaN()) {
        idx = doubleValue.intValue();
    }

    final Object object = get(idx, this);
    if (object == NOT_FOUND) {
        return null;
    }
    return object;
}
 

/**
 * Inserts a new cell at the specified index in the element's cells collection. If the index
 * is -1 or there is no index specified, then the cell is appended at the end of the
 * element's cells collection.
 * @see <a href="http://msdn.microsoft.com/en-us/library/ms536455.aspx">MSDN Documentation</a>
 * @param index specifies where to insert the cell in the tr.
 *        The default value is -1, which appends the new cell to the end of the cells collection
 * @return the newly-created cell
 */
@JsxFunction
public Object insertCell(final Object index) {
    int position = -1;
    if (index != Undefined.instance) {
        position = (int) Context.toNumber(index);
    }
    final HtmlTableRow htmlRow = (HtmlTableRow) getDomNodeOrDie();

    final boolean indexValid = position >= -1 && position <= htmlRow.getCells().size();
    if (indexValid) {
        final DomElement newCell = ((HtmlPage) htmlRow.getPage()).createElement("td");
        if (position == -1 || position == htmlRow.getCells().size()) {
            htmlRow.appendChild(newCell);
        }
        else {
            htmlRow.getCell(position).insertBefore(newCell);
        }
        return getScriptableFor(newCell);
    }
    throw Context.reportRuntimeError("Index or size is negative or greater than the allowed amount");
}
 

private static Object getValue(final ScriptableObject object, final String name, final Object defaulValue) {
    Object value = object.get(name);
    if (value != null) {
        if (defaulValue instanceof String) {
            value = String.valueOf(value);
        }
        else if (defaulValue instanceof Double) {
            value = Context.toNumber(value);
        }
        else if (defaulValue instanceof Number) {
            value = (int) Context.toNumber(value);
        }
        else {
            value = Context.toBoolean(value);
        }
    }
    else {
        value = defaulValue;
    }
    return value;
}
 

/**
 * Changes the start position of the range.
 * @param unit specifies the units to move
 * @param count the number of units to move
 * @return the number of units moved
 */
@JsxFunction
public int moveStart(final String unit, final Object count) {
    if (!"character".equals(unit)) {
        if (LOG.isWarnEnabled()) {
            LOG.warn("moveStart('" + unit + "') is not yet supported");
        }
        return 0;
    }
    int c = 1;
    if (!Undefined.isUndefined(count)) {
        c = (int) Context.toNumber(count);
    }
    if (range_.getStartContainer() == range_.getEndContainer()
            && range_.getStartContainer() instanceof SelectableTextInput) {
        final SelectableTextInput input = (SelectableTextInput) range_.getStartContainer();
        c = constrainMoveBy(c, range_.getStartOffset(), input.getText().length());
        range_.setStart(input, range_.getStartOffset() + c);
    }
    return c;
}
 

private static org.w3c.dom.traversal.NodeFilter createFilterWrapper(final Scriptable filter,
        final boolean filterFunctionOnly) {
    org.w3c.dom.traversal.NodeFilter filterWrapper = null;
    if (filter != null) {
        filterWrapper = new org.w3c.dom.traversal.NodeFilter() {
            @Override
            public short acceptNode(final org.w3c.dom.Node n) {
                final Object[] args = new Object[] {((DomNode) n).getScriptableObject()};
                final Object response;
                if (filter instanceof Callable) {
                    response = ((Callable) filter).call(Context.getCurrentContext(), filter, filter, args);
                }
                else {
                    if (filterFunctionOnly) {
                        throw Context.reportRuntimeError("only a function is allowed as filter");
                    }
                    response = ScriptableObject.callMethod(filter, "acceptNode", args);
                }
                return (short) Context.toNumber(response);
            }
        };
    }
    return filterWrapper;
}
 

/**
 * Creates a node using the supplied type, name, and namespace.
 * @param type a value that uniquely identifies the node type
 * @param name the value for the new node's <code>nodeName</code> property
 * @param namespaceURI the namespace URI.
 *        If specified, the node is created in the context of the namespaceURI parameter
 *        with the prefix specified on the node name.
 *        If the name parameter does not have a prefix, this is treated as the default namespace.
 * @return the newly created node
 */
@JsxFunction
public Object createNode(final Object type, final String name, final Object namespaceURI) {
    switch ((short) Context.toNumber(type)) {
        case Node.ELEMENT_NODE:
            return createElementNS((String) namespaceURI, name);
        case Node.ATTRIBUTE_NODE:
            return createAttribute(name);

        default:
            throw Context.reportRuntimeError("xmlDoc.createNode(): Unsupported type "
                    + (short) Context.toNumber(type));
    }
}
 

/**
 * Remove the callback from the list of animationFrames.
 * @param requestId the ID value returned by the call to window.requestAnimationFrame()
 * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/Window/cancelAnimationFrame">MDN Doc</a>
 */
@JsxFunction
public void cancelAnimationFrame(final Object requestId) {
    final int id = (int) Context.toNumber(requestId);

    final Iterator<AnimationFrame> frames = animationFrames_.iterator();
    while (frames.hasNext()) {
        final Window.AnimationFrame animationFrame = frames.next();
        if (animationFrame.id_ == id) {
            frames.remove();
        }
    }
}
 

/**
 * {@inheritDoc}
 */
@Override
protected Object getWithPreemptionByName(final String name, final List<DomNode> elements) {
    final List<DomNode> matchingElements = new ArrayList<>();
    final boolean searchName = isGetWithPreemptionSearchName();
    for (final DomNode next : elements) {
        if (next instanceof DomElement
                && (searchName || next instanceof HtmlInput || next instanceof HtmlForm)) {
            final String nodeName = ((DomElement) next).getAttributeDirect("name");
            if (name.equals(nodeName)) {
                matchingElements.add(next);
            }
        }
    }

    if (matchingElements.isEmpty()) {
        if (getBrowserVersion().hasFeature(HTMLCOLLECTION_ITEM_SUPPORTS_DOUBLE_INDEX_ALSO)) {
            final Double doubleValue = Context.toNumber(name);
            if (!doubleValue.isNaN()) {
                final Object object = get(doubleValue.intValue(), this);
                if (object != NOT_FOUND) {
                    return object;
                }
            }
        }
        return NOT_FOUND;
    }
    else if (matchingElements.size() == 1) {
        return getScriptableForElement(matchingElements.get(0));
    }

    // many elements => build a sub collection
    final DomNode domNode = getDomNodeOrNull();
    final HTMLCollection collection = new HTMLCollection(domNode, matchingElements);
    collection.setAvoidObjectDetection(true);
    return collection;
}
 

/**
 * {@inheritDoc}
 */
@Override
protected Object getWithPreemptionByName(final String name, final List<DomNode> elements) {
    final List<DomNode> matchingElements = new ArrayList<>();
    final boolean searchName = isGetWithPreemptionSearchName();
    for (final DomNode next : elements) {
        if (next instanceof DomElement
                && (searchName || next instanceof HtmlInput || next instanceof HtmlForm)) {
            final String nodeName = ((DomElement) next).getAttributeDirect("name");
            if (name.equals(nodeName)) {
                matchingElements.add(next);
            }
        }
    }

    if (matchingElements.isEmpty()) {
        if (getBrowserVersion().hasFeature(HTMLCOLLECTION_ITEM_SUPPORTS_DOUBLE_INDEX_ALSO)) {
            final Double doubleValue = Context.toNumber(name);
            if (!doubleValue.isNaN()) {
                final Object object = get(doubleValue.intValue(), this);
                if (object != NOT_FOUND) {
                    return object;
                }
            }
        }
        return NOT_FOUND;
    }
    else if (matchingElements.size() == 1) {
        return getScriptableForElement(matchingElements.get(0));
    }

    // many elements => build a sub collection
    final DomNode domNode = getDomNodeOrNull();
    final HTMLCollection collection = new HTMLCollection(domNode, matchingElements);
    collection.setAvoidObjectDetection(true);
    return collection;
}
 

/**
 * Creates a node using the supplied type, name, and namespace.
 * @param type a value that uniquely identifies the node type
 * @param name the value for the new node's <code>nodeName</code> property
 * @param namespaceURI the namespace URI.
 *        If specified, the node is created in the context of the namespaceURI parameter
 *        with the prefix specified on the node name.
 *        If the name parameter does not have a prefix, this is treated as the default namespace.
 * @return the newly created node
 */
@JsxFunction
public Object createNode(final Object type, final String name, final Object namespaceURI) {
    switch ((short) Context.toNumber(type)) {
        case Node.ELEMENT_NODE:
            return createElementNS((String) namespaceURI, name);
        case Node.ATTRIBUTE_NODE:
            return createAttribute(name);

        default:
            throw Context.reportRuntimeError("xmlDoc.createNode(): Unsupported type "
                    + (short) Context.toNumber(type));
    }
}
 

/**
 * Sets the {@code lineWidth} property.
 * @param lineWidth the {@code lineWidth} property
 */
@JsxSetter
public void setLineWidth(final Object lineWidth) {
    if (!Undefined.isUndefined(lineWidth)) {
        final double width = Context.toNumber(lineWidth);
        if (!Double.isNaN(width)) {
            getRenderingBackend().setLineWidth((int) width);
        }
    }
}
 

/**
 * Gets the {@code size} attribute.
 * @return the {@code size} attribute
 */
@JsxGetter
public int getSize() {
    return (int) Context.toNumber(getDomNodeOrDie().getAttributeDirect("size"));
}
 

/**
 * Returns the value of the tabIndex attribute.
 * @return the value of the tabIndex attribute
 */
@JsxGetter
public int getTabIndex() {
    return (int) Context.toNumber(getDomNodeOrDie().getAttributeDirect("tabindex"));
}
 

/**
 * Gets the {@code size} attribute.
 * @return the {@code size} attribute
 */
@JsxGetter
public int getSize() {
    return (int) Context.toNumber(getDomNodeOrDie().getAttributeDirect("size"));
}
 

/**
 * Gets the {@code size} attribute.
 * @return the {@code size} attribute
 */
@JsxGetter
public int getSize() {
    final HtmlBaseFont base = (HtmlBaseFont) getDomNodeOrDie();
    return (int) Context.toNumber(base.getSizeAttribute());
}