/**
* Inserts a widget before the specified index.
*
* <p>By default, each child will fill the panel. To build more interesting layouts, set child
* widgets' layout constraints using {@link #setWidgetLeftRight(Widget, double, Style.Unit,
* double, Style.Unit)} and related methods.
*
* <p>Inserting a widget in this way has no effect on the DOM structure, but can be useful for
* other panels that wrap LayoutPanel to maintain insertion order.
*
* @param widget the widget to be inserted
* @param beforeIndex the index before which it will be inserted
* @throws IndexOutOfBoundsException if <code>beforeIndex</code> is out of range
*/
public void insert(Widget widget, int beforeIndex) {
// Detach new child.
widget.removeFromParent();
// Logical attach.
getChildren().insert(widget, beforeIndex);
// Physical attach.
Layer layer = layout.attachChild(widget.getElement(), widget);
widget.setLayoutData(layer);
// Adopt.
adopt(widget);
animate(0);
}
/**
* Shows or hides the given widget and its layer. This method explicitly calls {@link
* UIObject#setVisible(boolean)} on the child widget and ensures that its associated layer is
* shown/hidden.
*
* @param child
* @param visible
*/
public void setWidgetVisible(Widget child, boolean visible) {
assertIsChild(child);
getLayer(child).setVisible(visible);
child.setVisible(visible);
animate(0);
}
/**
* Sets the child widget's vertical position within its layer.
*
* @param child
* @param position
*/
public void setWidgetVerticalPosition(Widget child, Alignment position) {
assertIsChild(child);
getLayer(child).setChildVerticalPosition(position);
animate(0);
}
/**
* Sets the child widget's top and height values.
*
* @param child
* @param top
* @param topUnit
* @param height
* @param heightUnit
*/
public void setWidgetTopHeight(
Widget child, double top, Unit topUnit, double height, Unit heightUnit) {
assertIsChild(child);
getLayer(child).setTopHeight(top, topUnit, height, heightUnit);
animate(0);
}
/**
* Sets the child widget's top and bottom values.
*
* @param child
* @param top
* @param topUnit
* @param bottom
* @param bottomUnit
*/
public void setWidgetTopBottom(
Widget child, double top, Unit topUnit, double bottom, Unit bottomUnit) {
assertIsChild(child);
getLayer(child).setTopBottom(top, topUnit, bottom, bottomUnit);
animate(0);
}
/**
* Sets the child widget's right and width values.
*
* @param child
* @param right
* @param rightUnit
* @param width
* @param widthUnit
*/
public void setWidgetRightWidth(
Widget child, double right, Unit rightUnit, double width, Unit widthUnit) {
assertIsChild(child);
getLayer(child).setRightWidth(right, rightUnit, width, widthUnit);
animate(0);
}
/**
* Sets the child widget's left and width values.
*
* @param child
* @param left
* @param leftUnit
* @param width
* @param widthUnit
*/
public void setWidgetLeftWidth(
Widget child, double left, Unit leftUnit, double width, Unit widthUnit) {
assertIsChild(child);
getLayer(child).setLeftWidth(left, leftUnit, width, widthUnit);
animate(0);
}
/**
* Sets the child widget's left and right values.
*
* @param child
* @param left
* @param leftUnit
* @param right
* @param rightUnit
*/
public void setWidgetLeftRight(
Widget child, double left, Unit leftUnit, double right, Unit rightUnit) {
assertIsChild(child);
getLayer(child).setLeftRight(left, leftUnit, right, rightUnit);
animate(0);
}
/**
* Sets the child widget's bottom and height values.
*
* @param child
* @param bottom
* @param bottomUnit
* @param height
* @param heightUnit
*/
public void setWidgetBottomHeight(
Widget child, double bottom, Unit bottomUnit, double height, Unit heightUnit) {
assertIsChild(child);
getLayer(child).setBottomHeight(bottom, bottomUnit, height, heightUnit);
animate(0);
}
public void animate(int duration) {
animate(duration, null);
}
