Package ej.widget.container

Class Grid

  • public class Grid
extends ej.mwt.Container
    Lays out any number of children in a grid.

    All the children are laid out in a grid, which has a fixed number of columns if the grid is horizontal, or a fixed number of rows if the grid is vertical.

    In a grid, all children have the same width and the same height, regardless of their optimal size.

    Horizontal:

    Horizontal grid.

    Vertical:

    Vertical grid.

    • Field Summary

      • Fields inherited from class ej.mwt.Widget

        NO_CONSTRAINT

    • Constructor Summary

      Constructors 
      Constructor Description
      Grid​(boolean orientation, int count)
      Creates a grid specifying its orientation and the number of widgets per row/column (depending on the orientation chosen via the horizontal parameter).

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addChild​(ej.mwt.Widget child)  
      protected void computeContentOptimalSize​(ej.mwt.util.Size size)  
      ej.mwt.Widget getCellChild​(int column, int row)
      Gets the widget at the specified column and row.
      int getCount()
      Gets the number of widgets per row/column (depending on the grid orientation).
      boolean getOrientation()
      Gets the orientation of this grid.
      void insertChild​(ej.mwt.Widget child, int index)  
      protected void layOutChildren​(int contentWidth, int contentHeight)  
      void removeAllChildren()  
      void removeChild​(ej.mwt.Widget child)  
      void replaceChild​(int index, ej.mwt.Widget child)  
      void setCount​(int count)
      Sets the number of widgets per row/column (depending on the grid orientation).
      void setOrientation​(boolean orientation)
      Sets the orientation of this grid.

      • Methods inherited from class ej.mwt.Container

        changeChildIndex, computeChildOptimalSize, getChild, getChildIndex, getChildren, getChildrenCount, getContentBounds, getContentHeight, getContentWidth, getContentX, getContentY, getWidgetAt, layOutAlignedChild, layOutChild, renderChild, renderContent, setHiddenChild, setHiddenChildren, setShownChild, setShownChildren, updateStyle

      • Methods inherited from class ej.mwt.Widget

        addClassSelector, contains, containsWidget, getAbsoluteX, getAbsoluteY, getDesktop, getHeight, getParent, getStyle, getWidth, getX, getY, handleEvent, hasClassSelector, isAttached, isEnabled, isInState, isShown, isTransparent, onAttached, onDetached, onHidden, onLaidOut, onShown, removeAllClassSelectors, removeClassSelector, render, requestLayOut, requestRender, requestRender, setClassSelectors, setEnabled, setPosition, setStyle

      • Methods inherited from class java.lang.Object

        clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • Grid

        public Grid​(boolean orientation,
            int count)
        Creates a grid specifying its orientation and the number of widgets per row/column (depending on the orientation chosen via the horizontal parameter).
        Parameters:
        orientation - the orientation of the grid (see LayoutOrientation).
        count - the number of widgets per row/column to set.
        Throws:
        java.lang.IllegalArgumentException - if the count is negative or zero.

    • Method Detail

      • setOrientation

        public void setOrientation​(boolean orientation)
        Sets the orientation of this grid.
        Parameters:
        orientation - the orientation to set (see LayoutOrientation).

      • getOrientation

        public boolean getOrientation()
        Gets the orientation of this grid.
        Returns:
        the orientation of this grid (see LayoutOrientation).

      • setCount

        public void setCount​(int count)
        Sets the number of widgets per row/column (depending on the grid orientation).
        Parameters:
        count - the number of widgets per row/column to set.
        Throws:
        java.lang.IllegalArgumentException - if the count is negative or zero.

      • getCount

        public int getCount()
        Gets the number of widgets per row/column (depending on the grid orientation).
        Returns:
        the number of widgets per row/column.

      • getCellChild

        public ej.mwt.Widget getCellChild​(int column,
                                  int row)
        Gets the widget at the specified column and row.
        Parameters:
        column - the column of the widget to return.
        row - the row of the widget to return.
        Returns:
        the widget at the specified column and row.
        Throws:
        java.lang.IndexOutOfBoundsException - if the cell referenced by the given coordinates is out of range.

      • addChild

        public void addChild​(ej.mwt.Widget child)
        Overrides:
        addChild in class ej.mwt.Container

      • removeChild

        public void removeChild​(ej.mwt.Widget child)
        Overrides:
        removeChild in class ej.mwt.Container

      • insertChild

        public void insertChild​(ej.mwt.Widget child,
                        int index)
        Overrides:
        insertChild in class ej.mwt.Container

      • replaceChild

        public void replaceChild​(int index,
                         ej.mwt.Widget child)
        Overrides:
        replaceChild in class ej.mwt.Container

      • removeAllChildren

        public void removeAllChildren()
        Overrides:
        removeAllChildren in class ej.mwt.Container

      • computeContentOptimalSize

        protected void computeContentOptimalSize​(ej.mwt.util.Size size)
        Specified by:
        computeContentOptimalSize in class ej.mwt.Widget

      • layOutChildren

        protected void layOutChildren​(int contentWidth,
                              int contentHeight)
        Specified by:
        layOutChildren in class ej.mwt.Container