Пример #1
0
  protected void addViewParameters(
      FacesContext ctx, String viewId, Map<String, List<String>> existingParameters) {

    UIViewRoot currentRoot = ctx.getViewRoot();
    String currentViewId = currentRoot.getViewId();
    Collection<UIViewParameter> toViewParams;
    Collection<UIViewParameter> currentViewParams;
    boolean currentIsSameAsNew = false;
    currentViewParams = ViewMetadata.getViewParameters(currentRoot);

    if (currentViewId.equals(viewId)) {
      currentIsSameAsNew = true;
      toViewParams = currentViewParams;
    } else {
      ViewDeclarationLanguage pdl = getViewDeclarationLanguage(ctx, viewId);
      ViewMetadata viewMetadata = pdl.getViewMetadata(ctx, viewId);
      UIViewRoot root = viewMetadata.createMetadataView(ctx);
      toViewParams = ViewMetadata.getViewParameters(root);
    }

    if (toViewParams.isEmpty()) {
      return;
    }

    for (UIViewParameter viewParam : toViewParams) {
      String value;
      // don't bother looking at view parameter if it's been overridden
      if (existingParameters.containsKey(viewParam.getName())) {
        continue;
      } else if (paramHasValueExpression(viewParam)) {
        value = viewParam.getStringValueFromModel(ctx);
      } else {
        // Anonymous view parameter:
        // Get string value from UIViewParameter instance stored in current view
        if (currentIsSameAsNew) {
          value = viewParam.getStringValue(ctx);
        }
        // ...or transfer string value from matching UIViewParameter instance stored in current view
        else {
          value = getStringValueToTransfer(ctx, viewParam, currentViewParams);
        }
      }
      if (value != null) {
        List<String> existing = existingParameters.get(viewParam.getName());
        if (existing == null) {
          existing = new ArrayList<String>(4);
          existingParameters.put(viewParam.getName(), existing);
        }
        existing.add(value);
      }
    }
  }
  private static void addChild(UIComponent parent, String prevId, UIComponent child) {
    if (parent != null) {
      List<UIComponent> children = parent.getChildren();
      int size = children.size();
      boolean hasPrev = prevId == null;

      int i = 0;
      for (; i < size; i++) {
        UIComponent oldChild = children.get(i);

        if (hasPrev && oldChild.getId() != null) {
          children.add(i, child);

          return;
        } else if (prevId != null && prevId.equals(oldChild.getId())) hasPrev = true;
      }

      parent.getChildren().add(child);
    }
  }