Examples of org.eclipse.wst.xml.core.internal.contentmodel.modelquery.ModelQuery

Package org.eclipse.wst.xml.core.internal.contentmodel.modelquery

Examples of org.eclipse.wst.xml.core.internal.contentmodel.modelquery.ModelQuery

org.eclipse.wst.xml.core.internal.contentmodel.modelquery.ModelQuery
This class provides an interface for performing higher level queries based on a xml model (DOM) and one or more associated content models (CMDocument). The queries provided can be organized into three groups: 1) DOM Node to CMNode mapping Given a grammatically valid DOM Node the corresponding CMNode can be determined. (i.e. Element -> CMElementDeclaration, Attr -> CMAttributeDeclaration, CharacterData -> CMDataType) 2) DOM editing tests ("Can I do this?") Questions such as canInsert, canRemove, canReplace can assist in the editing of a DOM. The validityChecking argument determines the strictness of the validity testing that occurs. - VALIDITY_NONE : The current content of the Element is ignored. Only the content model is considered. This is most useful for codeassist related queries. - VALIDITY_STRICT : The current content of the Element is considered. Returns true only if the operation preserves content validity. This is useful when DOM editing needs to be constrained to maintain validity. - VALIDITY_PARTIAL : Some optimized compromise between the two options above. 3) DOM editing actions ("What can I do here?") These methods return ModelQueryActions that are relevant at some specified DOM Node. The actions indicate what kinds of DOM Node can be inserted where (at what index).

   */
  protected CMElementDeclaration getDeclaration() {
    Document document = getOwnerDocument();
    if (document == null)
      return null;
    ModelQuery modelQuery = ModelQueryUtil.getModelQuery(document);
    if (modelQuery == null)
      return null;
    return modelQuery.getCMElementDeclaration(this);
  }

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  public IStructuredDocument getDocument() {
    return fDocument;
  }


  public ModelQuery getModelQuery() {
    ModelQuery mq = null;


    IStructuredModel xmlModel = null;
    try {
      xmlModel = StructuredModelManager.getModelManager().getExistingModelForRead(getDocument());
      mq = ModelQueryUtil.getModelQuery(xmlModel);

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  }
  
  private String getElementValueHelper(Element element) {
    String result = null;


    ModelQuery mq = ModelQueryUtil.getModelQuery(element.getOwnerDocument());
    if ((result == null) && (mq != null)) {
      CMElementDeclaration ed = mq.getCMElementDeclaration(element);
      if ((ed != null) && !Boolean.TRUE.equals(ed.getProperty("isInferred"))) { //$NON-NLS-1$
        result = descriptionBuilder.buildDescription(ed);
      }
    }
    return result != null ? result : ""; //$NON-NLS-1$

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  public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
    // remove our listeners to the old state
    if (oldInput != null) {
      Document domDoc = (Document) oldInput;
      ModelQuery mq = ModelQueryUtil.getModelQuery(domDoc);
      if (mq != null) {
        documentManager = mq.getCMDocumentManager();
        if (documentManager != null) {
          documentManager.removeListener(this);
        }
      }
    }


    if ((oldInput != null) && (oldInput instanceof IDOMNode)) {
      IJFaceNodeAdapterFactory factory = (IJFaceNodeAdapterFactory) ((IDOMNode) oldInput).getModel().getFactoryRegistry().getFactoryFor(IJFaceNodeAdapter.class);
      if (factory != null) {
        factory.removeListener(viewer);
      }
    }


    if (viewer instanceof StructuredViewer) {
      fViewer = null;
    }
    else {
      fViewer = (StructuredViewer) viewer;
    }


    if ((newInput != null) && (newInput instanceof IDOMNode)) {
      IJFaceNodeAdapterFactory factory = (IJFaceNodeAdapterFactory) ((IDOMNode) newInput).getModel().getFactoryRegistry().getFactoryFor(IJFaceNodeAdapter.class);
      if (factory != null) {
        factory.addListener(viewer);
      }
    }


    if (newInput != null) {
      Document domDoc = (Document) newInput;
      ModelQuery mq = ModelQueryUtil.getModelQuery(domDoc);


      if (mq != null) {
        documentManager = mq.getCMDocumentManager();
        if (documentManager != null) {
          documentManager.setPropertyEnabled(CMDocumentManager.PROPERTY_ASYNC_LOAD, true);
          documentManager.addListener(this);
        }
      }

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  }


  private List getRequiredAttrs(Node node) {
    List result = new ArrayList();


    ModelQuery modelQuery = getModelQuery(node);
    if (modelQuery != null) {
      CMElementDeclaration elementDecl = modelQuery.getCMElementDeclaration((Element) node);
      if (elementDecl != null) {
        CMNamedNodeMap attrMap = elementDecl.getAttributes();


        CMNamedNodeMapImpl allAttributes = new CMNamedNodeMapImpl(attrMap);
        List nodes = ModelQueryUtil.getModelQuery(node.getOwnerDocument()).getAvailableContent((Element) node, elementDecl, ModelQuery.INCLUDE_ATTRIBUTES);

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  }


  public String getElementValueHelper(Element element) {
    String result = null;


    ModelQuery mq = ModelQueryUtil.getModelQuery(element.getOwnerDocument());
    if ((result == null) && (mq != null)) {
      CMElementDeclaration ed = mq.getCMElementDeclaration(element);
      if ((ed != null) && !Boolean.TRUE.equals(ed.getProperty("isInferred"))) { //$NON-NLS-1$
        result = decriptionBuilder.buildDescription(ed);
      }
    }
    return result != null ? result : ""; //$NON-NLS-1$

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  }


  /**
   */
  protected CMDocument getCMDocument() {
    ModelQuery modelQuery = ModelQueryUtil.getModelQuery(this);
    if (modelQuery == null)
      return null;
    return modelQuery.getCorrespondingCMDocument(this);
  }

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   * @return a <code>CMNamedNodeMap</code> of attributes if the declaration exists; null otherwise.
   */
  CMNamedNodeMap getCMAttributes(Element element) {
    CMNamedNodeMap map = (CMNamedNodeMap) fCMCache.get(element);
    if (map == null) {
      ModelQuery modelQuery = ModelQueryUtil.getModelQuery(this);
      CMElementDeclaration decl = modelQuery != null ? modelQuery.getCMElementDeclaration(element) : null;
      if (decl != null) {
        map = decl.getAttributes();
        fCMCache.put(element, map);
      }
    }

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      Element element = (Element) node;
      String[] dataTypeValues = null;
      // The ModelQuery may not be available if the corresponding
      // adapter
      // is absent
      ModelQuery modelQuery = ModelQueryUtil.getModelQuery(element.getOwnerDocument());
      if (modelQuery != null) {
        dataTypeValues = modelQuery.getPossibleDataTypeValues(element, ad);
      }
      else {
        if (ad.getAttrType() != null) {
          dataTypeValues = ad.getAttrType().getEnumeratedValues();
        }

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      if ((regionText != null) && regionText.startsWith("&")) { //$NON-NLS-1$                 
        String key = (nodeOffset > 0) ? regionText.substring(1, nodeOffset) : ""; //$NON-NLS-1$


        // get entity proposals, passing in the appropriate start
        // string
        ModelQuery mq = ModelQueryUtil.getModelQuery(((Node) treeNode).getOwnerDocument());
        if (mq != null) {
          CMDocument xmlDoc = mq.getCorrespondingCMDocument(treeNode);
          CMNamedNodeMap cmmap = null;
          Properties entities = null;
          if (xmlDoc != null) {
            cmmap = xmlDoc.getEntities();
          }

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