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## com.bbn.openmap.plugin
Class AbstractPlugIn

    java.lang.Object
      com.bbn.openmap.plugin.AbstractPlugIn

All Implemented Interfaces:
  MapMouseListener, PlugIn, PropertyConsumer

Direct Known Subclasses:
  BeanContextAbstractPlugIn, EarthImagePlugIn, WebImagePlugIn

public abstract class AbstractPlugIn
extends java.lang.Object
implements PlugIn, PropertyConsumer, MapMouseListener

This class is an abstract implementation of the PlugIn. It takes care of setting up the layer, setting properties, etc.

See Also:
  `PlugInLayer`, `PlugIn`

Field Summary
`protected boolean` | `addToBeanContext` Flag to denote whether the plugin should be added to the bean context (MapHandler).
`protected java.awt.Component` | `component` The parent component, usually the PlugInLayer.
`I18n` | `i18n` Internationalization
`protected MapMouseListener` | `mml` The object handling mouse events for the plugin.
`protected java.lang.String` | `name` The pretty name for a plugin, if it was set in the properties.
`protected java.lang.String` | `prefix` The prefix for the plugin's properties.
`protected boolean` | `removable` Flag to designate the layer as removable or not.
`static java.lang.String` | `RemovableProperty` Property 'removable' to designate this layer as removable from the application, or able to be deleted.

Fields inherited from interface com.bbn.openmap.PropertyConsumer
`EditorProperty, initPropertiesProperty, LabelEditorProperty, ScopedEditorProperty`

Constructor Summary
`AbstractPlugIn()`
`AbstractPlugIn(java.awt.Component comp)`

Method Summary
`void` | `doPrepare()` Checks to see if the parent component is a PlugInLayer, and calls doPrepare() on it if it is.
`boolean` | `getAddToBeanContext()`
`java.awt.Component` | `getComponent()` Get the component that this plugin uses as a grip to the map.
`java.awt.Component` | `getGUI()` Gives the PlugIn a chance to present components that control its attributes.
`MapMouseListener` | `getMapMouseListener()` Returns the MapMouseListener that the plugin thinks should be used.
`java.lang.String[]` | `getMouseModeServiceList()` Return a list of the modes that are interesting to the MapMouseListener.
`java.lang.String` | `getName()` Get the pretty name of the plugin, which is really the pretty name of the parent component if it's set.
`java.util.Properties` | `getProperties(java.util.Properties getList)` Method to fill in a Properties object, reflecting the current values of the PropertyConsumer.
`java.util.Properties` | `getPropertyInfo(java.util.Properties list)` Method to fill in a Properties object with values reflecting the properties able to be set on this PropertyConsumer.
`java.lang.String` | `getPropertyPrefix()` Get the property key prefix that is being used to prepend to the property keys for Properties lookups.
`abstract OMGraphicList` | `getRectangle(Projection p)` The getRectangle call is the main call into the PlugIn module.
`boolean` | `isRemovable()` Check to see if the plugin (and layer) is marked as one that can be removed from an application.
`boolean` | `mouseClicked(java.awt.event.MouseEvent e)` Invoked when the mouse has been clicked on a component.
`boolean` | `mouseDragged(java.awt.event.MouseEvent e)` Invoked when a mouse button is pressed on a component and then dragged.
`void` | `mouseEntered(java.awt.event.MouseEvent e)` Invoked when the mouse enters a component.
`void` | `mouseExited(java.awt.event.MouseEvent e)` Invoked when the mouse exits a component.
`void` | `mouseMoved()` Handle a mouse cursor moving without the button being pressed.
`boolean` | `mouseMoved(java.awt.event.MouseEvent e)` Invoked when the mouse button has been moved on a component (with no buttons down).
`boolean` | `mousePressed(java.awt.event.MouseEvent e)` Invoked when a mouse button has been pressed on a component.
`boolean` | `mouseReleased(java.awt.event.MouseEvent e)` Invoked when a mouse button has been released on a component.
`void` | `removed()` Method that gets called when the PlugInLayer has been removed from the map, so the PlugIn can free up resources.
`void` | `repaint()` Call repaint on the parent component.
`void` | `setAddToBeanContext(boolean value)`
`void` | `setComponent(java.awt.Component comp)` Set the component that this PlugIn uses as a grip to the map.
`void` | `setMapMouseListener(MapMouseListener mml)` Set the MapMouseListener for this PlugIn.
`void` | `setName(java.lang.String name)` Set the name of the plugin.
`void` | `setProperties(java.util.Properties setList)` Method to set the properties in the PropertyConsumer.
`void` | `setProperties(java.lang.String prefix, java.util.Properties setList)` Method to set the properties in the PropertyConsumer.
`void` | `setPropertyPrefix(java.lang.String prefix)` Set the property key prefix that should be used by the PropertyConsumer.
`void` | `setRemovable(boolean set)` Mark the plugin (and layer) as removable, or one that can be deleted from the application.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### RemovableProperty

    public static final java.lang.String RemovableProperty

  Property 'removable' to designate this layer as removable from the application, or able to be deleted. True by default.

  See Also:
    Constant Field Values

### removable

    protected boolean removable

  Flag to designate the layer as removable or not.

### component

    protected java.awt.Component component

  The parent component, usually the PlugInLayer.

### prefix

    protected java.lang.String prefix

  The prefix for the plugin's properties.

### name

    protected java.lang.String name

  The pretty name for a plugin, if it was set in the properties.

### mml

    protected MapMouseListener mml

  The object handling mouse events for the plugin. By default, the Plugin is it, but it doesn't have to be.

### addToBeanContext

    protected boolean addToBeanContext

  Flag to denote whether the plugin should be added to the bean context (MapHandler). True by default.

### i18n

    public I18n i18n

  Internationalization

Constructor Detail

### AbstractPlugIn

    public AbstractPlugIn()

### AbstractPlugIn

    public AbstractPlugIn(java.awt.Component comp)

Method Detail

### setName

    public void setName(java.lang.String name)

  Set the name of the plugin. If the parent component is a layer, set its pretty name as well.

### getName

    public java.lang.String getName()

  Get the pretty name of the plugin, which is really the pretty name of the parent component if it's set.

### setComponent

    public void setComponent(java.awt.Component comp)

  Set the component that this PlugIn uses as a grip to the map.

  Specified by:
    `setComponent` in interface `PlugIn`

### getComponent

    public java.awt.Component getComponent()

  Get the component that this plugin uses as a grip to the map.

  Specified by:
    `getComponent` in interface `PlugIn`

### repaint

    public void repaint()

  Call repaint on the parent component.

### doPrepare

    public void doPrepare()

  Checks to see if the parent component is a PlugInLayer, and calls doPrepare() on it if it is.

### setMapMouseListener

    public void setMapMouseListener(MapMouseListener mml)

  Set the MapMouseListener for this PlugIn. The MapMouseListener is responsible for handling the MouseEvents that are occuring over the layer using the PlugIn, as well as being able to let others know which MouseModes are of interest to receive MouseEvents from.

  Specified by:
    `setMapMouseListener` in interface `PlugIn`
  Parameters:
    `mml` - MapMouseListener.
  See Also:
    `MapMouseListener`

### getMapMouseListener

    public MapMouseListener getMapMouseListener()

  Returns the MapMouseListener that the plugin thinks should be used.

  Specified by:
    `getMapMouseListener` in interface `PlugIn`
  See Also:
    `MapMouseListener`

### getRectangle

    public abstract OMGraphicList getRectangle(Projection p)

  The getRectangle call is the main call into the PlugIn module. The module is expected to fill a graphics list with objects that are within the screen parameters passed. It's assumed that the PlugIn will call generate(projection) on the OMGraphics returned! If you don't call generate on the OMGraphics, they will not be displayed on the map.

  Specified by:
    `getRectangle` in interface `PlugIn`
  Parameters:
    `p` - projection of the screen, holding scale, center coords, height, width. May be null if the parent component hasn't been given a projection.
  Returns:
    OMGraphicList.
  See Also:
    `Projection`, `OMGraphicList`

### getGUI

    public java.awt.Component getGUI()

  Description copied from interface: `PlugIn`
  Gives the PlugIn a chance to present components that control its attributes.

  Specified by:
    `getGUI` in interface `PlugIn`

### setAddToBeanContext

    public void setAddToBeanContext(boolean value)

### getAddToBeanContext

    public boolean getAddToBeanContext()

### setRemovable

    public void setRemovable(boolean set)

  Mark the plugin (and layer) as removable, or one that can be deleted from the application. What that means is up to the LayerHandler or other application components.

### isRemovable

    public boolean isRemovable()

  Check to see if the plugin (and layer) is marked as one that can be removed from an application.

  Returns:
    true if plugin should be allowed to be deleted.

### setProperties

    public void setProperties(java.util.Properties setList)

  Method to set the properties in the PropertyConsumer. It is assumed that the properties do not have a prefix associated with them, or that the prefix has already been set.

  Specified by:
    `setProperties` in interface `PropertyConsumer`
  Parameters:
    `setList` - a properties object that the PropertyConsumer can use to retrieve expected properties it can use for configuration.

### setProperties

    public void setProperties(java.lang.String prefix,
                              java.util.Properties setList)

  Method to set the properties in the PropertyConsumer. The prefix is a string that should be prepended to each property key (in addition to a separating '.') in order for the PropertyConsumer to uniquely identify properies meant for it, in the midst of of Properties meant for several objects.

  Specified by:
    `setProperties` in interface `PropertyConsumer`
  Parameters:
    `prefix` - a String used by the PropertyConsumer to prepend to each property value it wants to look up - setList.getProperty(prefix.propertyKey). If the prefix had already been set, then the prefix passed in should replace that previous value.
    `setList` - a Properties object that the PropertyConsumer can use to retrieve expected properties it can use for configuration.

### getProperties

    public java.util.Properties getProperties(java.util.Properties getList)

  Method to fill in a Properties object, reflecting the current values of the PropertyConsumer. If the PropertyConsumer has a prefix set, the property keys should have that prefix plus a separating '.' prepended to each propery key it uses for configuration.

  Specified by:
    `getProperties` in interface `PropertyConsumer`
  Parameters:
    `getList` - a Properties object to load the PropertyConsumer properties into. If getList equals null, then a new Properties object should be created.
  Returns:
    Properties object containing PropertyConsumer property values. If getList was not null, this should equal getList. Otherwise, it should be the Properties object created by the PropertyConsumer.

### getPropertyInfo

    public java.util.Properties getPropertyInfo(java.util.Properties list)

  Method to fill in a Properties object with values reflecting the properties able to be set on this PropertyConsumer. The key for each property should be the raw property name (without a prefix) with a value that is a String that describes what the property key represents, along with any other information about the property that would be helpful (range, default value, etc.).

  Specified by:
    `getPropertyInfo` in interface `PropertyConsumer`
  Parameters:
    `list` - a Properties object to load the PropertyConsumer properties into. If getList equals null, then a new Properties object should be created.
  Returns:
    Properties object containing PropertyConsumer property values. If getList was not null, this should equal getList. Otherwise, it should be the Properties object created by the PropertyConsumer.

### setPropertyPrefix

    public void setPropertyPrefix(java.lang.String prefix)

  Set the property key prefix that should be used by the PropertyConsumer. The prefix, along with a '.', should be prepended to the property keys known by the PropertyConsumer.

  Specified by:
    `setPropertyPrefix` in interface `PropertyConsumer`
  Parameters:
    `prefix` - the prefix String.

### getPropertyPrefix

    public java.lang.String getPropertyPrefix()

  Get the property key prefix that is being used to prepend to the property keys for Properties lookups.

  Specified by:
    `getPropertyPrefix` in interface `PropertyConsumer`
  Returns:
    the property prefix for the plugin.

### getMouseModeServiceList

    public java.lang.String[] getMouseModeServiceList()

  Return a list of the modes that are interesting to the MapMouseListener. The source MouseEvents will only get sent to the MapMouseListener if the mode is set to one that the listener is interested in. Layers interested in receiving events should register for receiving events in "select" mode: `

       return new String[] { SelectMouseMode.modeID };

  `

  ``
  Specified by:
    `getMouseModeServiceList` in interface `MapMouseListener`
  Returns:
    String[] of modeID's
  See Also:
    `NavMouseMode.modeID`, `SelectMouseMode.modeID`, `NullMouseMode.modeID`

### mousePressed

    public boolean mousePressed(java.awt.event.MouseEvent e)

  Invoked when a mouse button has been pressed on a component.

  Specified by:
    `mousePressed` in interface `MapMouseListener`
  Parameters:
    `e` - MouseEvent
  Returns:
    true if the listener was able to process the event.

### mouseReleased

    public boolean mouseReleased(java.awt.event.MouseEvent e)

  Invoked when a mouse button has been released on a component.

  Specified by:
    `mouseReleased` in interface `MapMouseListener`
  Parameters:
    `e` - MouseEvent
  Returns:
    true if the listener was able to process the event.

### mouseClicked

    public boolean mouseClicked(java.awt.event.MouseEvent e)

  Invoked when the mouse has been clicked on a component. The listener will receive this event if it successfully processed `mousePressed()`, or if no other listener processes the event. If the listener successfully processes `mouseClicked()`, then it will receive the next `mouseClicked()` notifications that have a click count greater than one.

  NOTE: We have noticed that this method can sometimes be erroneously invoked. It seems to occur when a light-weight AWT component (like an internal window or menu) closes (removes itself from the window hierarchy). A specific OpenMap example is when you make a menu selection when the MenuItem you select is above the MapBean canvas. After making the selection, the mouseClicked() gets invoked on the MouseDelegator, which passes it to the appropriate listeners depending on the MouseMode. The best way to avoid this problem is to not implement anything crucial in this method. Use a combination of `mousePressed()` and `mouseReleased()` instead.

  Specified by:
    `mouseClicked` in interface `MapMouseListener`
  Parameters:
    `e` - MouseEvent
  Returns:
    true if the listener was able to process the event.

### mouseEntered

    public void mouseEntered(java.awt.event.MouseEvent e)

  Invoked when the mouse enters a component.

  Specified by:
    `mouseEntered` in interface `MapMouseListener`
  Parameters:
    `e` - MouseEvent

### mouseExited

    public void mouseExited(java.awt.event.MouseEvent e)

  Invoked when the mouse exits a component.

  Specified by:
    `mouseExited` in interface `MapMouseListener`
  Parameters:
    `e` - MouseEvent

### mouseDragged

    public boolean mouseDragged(java.awt.event.MouseEvent e)

  Invoked when a mouse button is pressed on a component and then dragged. The listener will receive these events if it successfully processes mousePressed(), or if no other listener processes the event.

  Specified by:
    `mouseDragged` in interface `MapMouseListener`
  Parameters:
    `e` - MouseEvent
  Returns:
    true if the listener was able to process the event.

### mouseMoved

    public boolean mouseMoved(java.awt.event.MouseEvent e)

  Invoked when the mouse button has been moved on a component (with no buttons down).

  Specified by:
    `mouseMoved` in interface `MapMouseListener`
  Parameters:
    `e` - MouseEvent
  Returns:
    true if the listener was able to process the event.

### mouseMoved

    public void mouseMoved()

  Handle a mouse cursor moving without the button being pressed. This event is intended to tell the listener that there was a mouse movement, but that the event was consumed by another layer. This will allow a mouse listener to clean up actions that might have happened because of another motion event response.

  Specified by:
    `mouseMoved` in interface `MapMouseListener`

### removed

    public void removed()

  Method that gets called when the PlugInLayer has been removed from the map, so the PlugIn can free up resources.

  Specified by:
    `removed` in interface `PlugIn`

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