org.eclipse.swt.widgets.Tree.setItemCount()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中org.eclipse.swt.widgets.Tree.setItemCount()方法的一些代码示例，展示了Tree.setItemCount()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Tree.setItemCount()方法的具体详情如下：
包路径：org.eclipse.swt.widgets.Tree
类名称：Tree
方法名：setItemCount

Tree.setItemCount介绍

[英]Sets the number of root-level items contained in the receiver.
[中]设置接收器中包含的根级别项目数。

代码示例

代码示例来源：origin: org.eclipse.swt.cocoa.macosx/x86_64

/**
 * Removes all of the items from the receiver.
 * <p>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.1
 */
public void removeAll () {
  checkWidget ();
  parent.setItemCount (this, 0);
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.gtk.linux.ppc

/**
 * Sets the number of root-level items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  setItemCount (0, count);
}

代码示例来源：origin: org.eclipse.swt.cocoa.macosx/x86_64

/**
 * Sets the number of child items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  parent.setItemCount (this, count);
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.gtk.linux.ppc

/**
 * Sets the number of child items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  parent.setItemCount (handle, count);
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.gtk.aix.ppc

/**
 * Sets the number of root-level items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  setItemCount (0, count);
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.gtk.linux.s390x

/**
 * Sets the number of child items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  parent.setItemCount (handle, count);
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.gtk.aix.ppc

/**
 * Sets the number of child items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  parent.setItemCount (handle, count);
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.swt.gtk.linux.s390x

/**
 * Sets the number of root-level items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  setItemCount (0, count);
}

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.swt.win32.win32.x86

/**
 * Sets the number of child items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  int /*long*/ hwnd = parent.handle;
  int /*long*/ hItem = OS.SendMessage (hwnd, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, handle);
  parent.setItemCount (count, handle, hItem);
}

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.swt.win32.win32.x86

/**
 * Sets the number of root-level items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  count = Math.max (0, count);
  int /*long*/ hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
  setItemCount (count, OS.TVGN_ROOT, hItem);
}

代码示例来源：origin: org.eclipse.swt.cocoa.macosx/x86_64

/**
 * Sets the number of root-level items contained in the receiver.
 *
 * @param count the number of items
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.2
 */
public void setItemCount (int count) {
  checkWidget ();
  checkItems ();
  count = Math.max (0, count);
  setItemCount (null, count);
}

代码示例来源：origin: org.eclipse.rap/org.eclipse.rap.jface

public void run() {
    if (internalIsInputOrEmptyPath(elementOrTreePath)) {
      getTree().setItemCount(count);
      return;
    }
    Widget[] items = internalFindItems(elementOrTreePath);
    for (int i = 0; i < items.length; i++) {
      TreeItem treeItem = (TreeItem) items[i];
      treeItem.setItemCount(count);
    }
  }
});

代码示例来源：origin: ifedorenko/p2-browser

@Override
  public void run()
  {
    treeViewer.getTree().setRedraw( false );
    treeViewer.getTree().setItemCount( repositories.size() );
    treeViewer.refresh();
    if ( unitMatcher != null )
    {
      treeViewer.expandAll();
    }
    treeViewer.getTree().setRedraw( true );
  }
} );

代码示例来源：origin: org.eclipse.rap/org.eclipse.rap.jface

protected void internalAdd(Widget widget, Object parentElement,
    Object[] childElements) {
  if (contentProviderIsLazy) {
    if (widget instanceof TreeItem) {
      TreeItem ti = (TreeItem) widget;
      int count = ti.getItemCount() + childElements.length;
      ti.setItemCount(count);
      ti.clearAll(false);
    } else {
      Tree t = (Tree) widget;
      t.setItemCount(t.getItemCount() + childElements.length);
      t.clearAll(false);
    }
    return;
  }
  super.internalAdd(widget, parentElement, childElements);
}

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface

@Override
protected void internalAdd(Widget widget, Object parentElement,
    Object[] childElements) {
  if (contentProviderIsLazy) {
    if (widget instanceof TreeItem) {
      TreeItem ti = (TreeItem) widget;
      int count = ti.getItemCount() + childElements.length;
      ti.setItemCount(count);
      ti.clearAll(false);
    } else {
      Tree t = (Tree) widget;
      t.setItemCount(t.getItemCount() + childElements.length);
      t.clearAll(false);
    }
    return;
  }
  super.internalAdd(widget, parentElement, childElements);
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.jface

@Override
protected void internalAdd(Widget widget, Object parentElement,
    Object[] childElements) {
  if (contentProviderIsLazy) {
    if (widget instanceof TreeItem) {
      TreeItem ti = (TreeItem) widget;
      int count = ti.getItemCount() + childElements.length;
      ti.setItemCount(count);
      ti.clearAll(false);
    } else {
      Tree t = (Tree) widget;
      t.setItemCount(t.getItemCount() + childElements.length);
      t.clearAll(false);
    }
    return;
  }
  super.internalAdd(widget, parentElement, childElements);
}

代码示例来源：origin: ifedorenko/p2-browser

void setDependencyTree( InstallableUnitDependencyTree dependencyTree )
{
  hierarchyTreeViewer.getTree().setRedraw( false );
  hierarchyTreeViewer.setInput( dependencyTree );
  hierarchyTreeViewer.getTree().setItemCount( dependencyTree.getRootIncludedInstallableUnits().size() );
  hierarchyTreeViewer.refresh();
  if ( dependencyTree.size() < 100 )
  {
    hierarchyTreeViewer.expandAll();
  }
  else
  {
    hierarchyTreeViewer.expandToLevel( 2 );
  }
  hierarchyTreeViewer.getTree().setRedraw( true );
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.jface

/**
 * For a TreeViewer with a tree with the VIRTUAL style bit set, set the
 * number of children of the given element or tree path. To set the number
 * of children of the invisible root of the tree, you can pass the input
 * object or an empty tree path.
 *
 * @param elementOrTreePath
 *            the element, or tree path
 * @param count
 *
 * @since 3.2
 */
public void setChildCount(final Object elementOrTreePath, final int count) {
  if (checkBusy())
    return;
  preservingSelection(() -> {
    if (internalIsInputOrEmptyPath(elementOrTreePath)) {
      getTree().setItemCount(count);
      return;
    }
    Widget[] items = internalFindItems(elementOrTreePath);
    for (Widget item : items) {
      TreeItem treeItem = (TreeItem) item;
      treeItem.setItemCount(count);
    }
  });
}

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface

/**
 * For a TreeViewer with a tree with the VIRTUAL style bit set, set the
 * number of children of the given element or tree path. To set the number
 * of children of the invisible root of the tree, you can pass the input
 * object or an empty tree path.
 *
 * @param elementOrTreePath
 *            the element, or tree path
 * @param count
 *
 * @since 3.2
 */
public void setChildCount(final Object elementOrTreePath, final int count) {
  if (checkBusy())
    return;
  preservingSelection(() -> {
    if (internalIsInputOrEmptyPath(elementOrTreePath)) {
      getTree().setItemCount(count);
      return;
    }
    Widget[] items = internalFindItems(elementOrTreePath);
    for (Widget item : items) {
      TreeItem treeItem = (TreeItem) item;
      treeItem.setItemCount(count);
    }
  });
}

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface

/**
 * Traverses the visible (expanded) part of the tree and updates child
 * counts.
 *
 * @param parent the parent of the widget, or <code>null</code> if the widget is the tree
 * @param widget
 * @param element
 * @param index the index of the widget in the children array of its parent, or 0 if the widget is the tree
 */
private void virtualRefreshExpandedItems(Widget parent, Widget widget, Object element, int index) {
  if (widget instanceof Tree) {
    if (element == null) {
      ((Tree) widget).setItemCount(0);
      return;
    }
    virtualLazyUpdateChildCount(widget, getChildren(widget).length);
  } else if (((TreeItem) widget).getExpanded()) {
    // prevent SetData callback
    ((TreeItem)widget).setText(" "); //$NON-NLS-1$
    virtualLazyUpdateWidget(parent, index);
  } else {
    return;
  }
  Item[] items = getChildren(widget);
  for (int i = 0; i < items.length; i++) {
    Item item = items[i];
    Object data = item.getData();
    virtualRefreshExpandedItems(widget, item, data, i);
  }
}

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