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Java Source Code / Java Documentation » Swing Library » abeille forms designer » com.jeta.forms.gui.form   Source Cross Reference   Class Diagram   Java Document (Java Doc)   javax.swing.JPanel    com.jeta.forms.gui.form.GridComponent All known Subclasses:   com.jeta.forms.gui.form.StandardComponent,  com.jeta.swingbuilder.gui.formmgr.FormSurrogate,  com.jeta.forms.gui.form.FormComponent, GridComponent abstract public class GridComponent extends JPanel (Code) This class is used to contain a JETABean in a cell on a form. It maintains information about its cell such as row/column location as well as other cell constraints. A GridComponent also defines methods (using memento pattern) for serializing itself to and from a persistent store. We don't use the standard Java serialization because the Sun does not guarantee compatibility with future versions of Java, and we need more fine-grained control of the serialization process. A GridComponent maintains a reference to keyboard and mouse handlers needed during design mode. Different GridComonent types will have different types of handlers. author:    Jeff Tassin Field Summary final static  int EMPTY_CELL_HEIGHT      final static  int EMPTY_CELL_WIDTH      Constructor Summary public   GridComponent()      Creates an uninitialized GridComponent instance. public   GridComponent(GridView parentView)      Creates a GridComponent instance with the specified GridView parent. public   GridComponent(JETABean jbean, GridView parent)      Creates a GridComponent instance with the specified GridView parent and JETABean. Parameters:   jbean - the underyling JETABean. Method Summary public  void addListener(GridCellListener listener)      Adds a listener that is interested in GridCellEvents from this component. public  void fireGridCellEvent(GridCellEvent evt)      Notifies all GridCellListeners with the specified event. public  JETABean getBean()      Returns the underlying JETABean.  Component getBeanChildComponent()      Returns the component that is directly contained by the JETABean. Normally, this would be the Java bean. public  Component getBeanDelegate()      Returns the actual Java Bean that is on the form. public  String getBeanName()      Returns the name property of the underlying Java bean. public  int getCellHeight()      public  int getCellWidth()      public  int getCellX()      Returns the left origin (in parent coordinates) of the fist cell occupied by this component. public  int getCellY()      Returns the top origin (in parent coordinates) of the fist cell occupied by this component. public  int getColumn()      Returns the column that contains this component. public  int getColumnSpan()      Returns the number of columns occupied by this component. public  ComponentConstraints getConstraints()      Returns the component constraints for this component. public  String getId()      Returns the id of this component. public  CellKeyboardHandler getKeyboardHandler()      Returns the keyboard handler associated with this component. public  Dimension getMinimumSize()      the minimum size for this component. public  CellMouseHandler getMouseHandler()      Returns the mouse handler for this component. public  GridView getParentView()      Returns the GridView that contains this component. public  Dimension getPreferredSize()      Returns the preferred size for this component. public  int getRow()      Returns the row that contains this component. public  int getRowSpan()      Returns the number of rows occupied by this component. abstract public  ComponentMemento getState(StateRequest si)      Returns the internal state of this component as a memento. public  boolean hasBean()      Returns true if this component contains a java bean. public  boolean isSelected()      Returns true if this component is currently selected. public  boolean isShowing()      Returns true if this component has a nonzero width and height. public  void postInitialize(FormPanel panel)      PostInitialize is called once after all components in a form have been re-instantiated and the state has been set at runtime (not design time). abstract public  void print()      public  void removeListener(GridCellListener listener)      Removes the previously registered grid cell listener. protected  void setBean(JETABean jbean)      Sets the JETABean associated with this component. public  void setKeyboardHandler(CellKeyboardHandler handler)      Sets the keyboard handler associated with this component. public  void setMouseHandler(CellMouseHandler handler)      public  void setName(String name)      This should never be called. public  void setParentView(GridView view)      Sets the GridView that contains this component. public  void setSelected(boolean sel)      Sets the selected flag for this component. abstract public  void setState(ComponentMemento memento)      Field Detail EMPTY_CELL_HEIGHT final static int EMPTY_CELL_HEIGHT(Code) EMPTY_CELL_WIDTH final static int EMPTY_CELL_WIDTH(Code) Empty cell dimension Constructor Detail GridComponent public GridComponent()(Code) Creates an uninitialized GridComponent instance. GridComponent public GridComponent(GridView parentView)(Code) Creates a GridComponent instance with the specified GridView parent. Parameters:   parentView - the GridView that contains this component. GridComponent public GridComponent(JETABean jbean, GridView parent)(Code) Creates a GridComponent instance with the specified GridView parent and JETABean. Parameters:   jbean - the underyling JETABean. This object contains the Java Bean. Parameters:   parent - the GridView that contains this component. Method Detail addListener public void addListener(GridCellListener listener)(Code) Adds a listener that is interested in GridCellEvents from this component. This is only needed in design mode. Parameters:   listener - the listener to add fireGridCellEvent public void fireGridCellEvent(GridCellEvent evt)(Code) Notifies all GridCellListeners with the specified event. This is only used in design mode. Parameters:   evt - the event to send to all registered listeners getBean public JETABean getBean()(Code) Returns the underlying JETABean. The JETABean is a container for the actual Java Bean. the JETABean component. getBeanChildComponent Component getBeanChildComponent()(Code) Returns the component that is directly contained by the JETABean. Normally, this would be the Java bean. However, in a few cases, the JETABean does not directly contain the Java Bean. Scrollpanes are an example of this. the JETABean child component. getBeanDelegate public Component getBeanDelegate()(Code) Returns the actual Java Bean that is on the form. the Java Bean that is contained by the JETABean. getBeanName public String getBeanName()(Code) Returns the name property of the underlying Java bean. the name of the bean component getCellHeight public int getCellHeight()(Code) Returns the total height in pixels of the cells occupied by this component getCellWidth public int getCellWidth()(Code) Returns the total width in pixels of the cells occupied by this component getCellX public int getCellX()(Code) Returns the left origin (in parent coordinates) of the fist cell occupied by this component. the left location of this cell in the parent coordinates. getCellY public int getCellY()(Code) Returns the top origin (in parent coordinates) of the fist cell occupied by this component. the top location of this cell in the parent coordinates. getColumn public int getColumn()(Code) Returns the column that contains this component. getColumnSpan public int getColumnSpan()(Code) Returns the number of columns occupied by this component. This is normally 1 unless the column span was changed in the designer. getConstraints public ComponentConstraints getConstraints()(Code) Returns the component constraints for this component. Component constraints include the column, row, column span, and row span assignments. They also include any alignment and inset values for this component. the component constraints associated with this component. getId public String getId()(Code) Returns the id of this component. This is only valid for form components. the id of this component. getKeyboardHandler public CellKeyboardHandler getKeyboardHandler()(Code) Returns the keyboard handler associated with this component. Handlers are set only during design mode. getMinimumSize public Dimension getMinimumSize()(Code) the minimum size for this component. When in design mode, we setthe min size to something like 4x4 to prevent the grid cells inthe GridView from being too small. getMouseHandler public CellMouseHandler getMouseHandler()(Code) Returns the mouse handler for this component. This is only set and used by the designer. getParentView public GridView getParentView()(Code) Returns the GridView that contains this component. This is not the same as this component's immediate parent. the view that contains this component getPreferredSize public Dimension getPreferredSize()(Code) Returns the preferred size for this component. When in design mode, we set the preferred size to some non-zero value to prevent the grid cells in the GridView from being too small. the preferred size for this component. getRow public int getRow()(Code) Returns the row that contains this component. getRowSpan public int getRowSpan()(Code) Returns the number of rows occupied by this component. This is normally 1 unless the row span was changed in the designer. getState abstract public ComponentMemento getState(StateRequest si) throws FormException(Code) Returns the internal state of this component as a memento. This includes the cell constraints as well as the properties for the underlying Java bean. Parameters:   si - a request object that controls how much information should bestored in the memento. hasBean public boolean hasBean()(Code) Returns true if this component contains a java bean. In design mode empty cells on the form will not contain a bean but will contain a valid GridComponent true if this component contains java bean isSelected public boolean isSelected()(Code) Returns true if this component is currently selected. This is used only in design mode. isShowing public boolean isShowing()(Code) Returns true if this component has a nonzero width and height. This can occur in some cases in the designer. If we have non visible component, we show an icon so the user has some indication that it exists. true if this component is large enough to be visible postInitialize public void postInitialize(FormPanel panel)(Code) PostInitialize is called once after all components in a form have been re-instantiated and the state has been set at runtime (not design time). This gives each property and component a chance to do some last minute initializations that might depend on the top level parent. print abstract public void print()(Code) Print for debugging removeListener public void removeListener(GridCellListener listener)(Code) Removes the previously registered grid cell listener. setBean protected void setBean(JETABean jbean)(Code) Sets the JETABean associated with this component. setKeyboardHandler public void setKeyboardHandler(CellKeyboardHandler handler)(Code) Sets the keyboard handler associated with this component. Handlers are set only during design mode. setMouseHandler public void setMouseHandler(CellMouseHandler handler)(Code) Sets the mouse handler for this component setName public void setName(String name)(Code) This should never be called. Overridden here so we can assert when debugging. setParentView public void setParentView(GridView view)(Code) Sets the GridView that contains this component. This is not the same as the immediate parent of this component. the view that contains this component setSelected public void setSelected(boolean sel)(Code) Sets the selected flag for this component. setState abstract public void setState(ComponentMemento memento) throws FormException(Code) Sets the state of this component from a previously stored state Parameters:   memento - the state information to set. Methods inherited from javax.swing.JPanel public AccessibleContext getAccessibleContext()(Code)(Java Doc) public PanelUI getUI()(Code)(Java Doc) public String getUIClassID()(Code)(Java Doc) protected String paramString()(Code)(Java Doc) public void setUI(PanelUI ui)(Code)(Java Doc) public void updateUI()(Code)(Java Doc)