org.cef.handler

Class CefRenderHandlerAdapter

java.lang.Object

org.cef.handler.CefRenderHandlerAdapter

All Implemented Interfaces:

CefRenderHandler

public abstract class CefRenderHandlerAdapter
extends java.lang.Object
implements CefRenderHandler

An abstract adapter class for receiving render events. The methods in this class are empty. This class exists as convenience for creating handler objects.

Constructor Summary

Constructors

Constructor and Description
CefRenderHandlerAdapter()

Method Summary

Modifier and Type	Method and Description
boolean	getScreenInfo(CefBrowser browser, CefScreenInfo screenInfo) Retrieve the screen info.
java.awt.Point	getScreenPoint(CefBrowser browser, java.awt.Point viewPoint) Retrieve the screen point for the specified view point.
java.awt.Rectangle	getViewRect(CefBrowser browser) Retrieve the view rectangle.
boolean	onCursorChange(CefBrowser browser, int cursorType) Handle cursor changes.
void	onPaint(CefBrowser browser, boolean popup, java.awt.Rectangle[] dirtyRects, java.nio.ByteBuffer buffer, int width, int height) Handle painting.
void	onPopupShow(CefBrowser browser, boolean show) Show or hide the popup window.
void	onPopupSize(CefBrowser browser, java.awt.Rectangle size) Size the popup window.
boolean	startDragging(CefBrowser browser, CefDragData dragData, int mask, int x, int y) Called when the user starts dragging content in the web view.
void	updateDragCursor(CefBrowser browser, int operation) Called when the web view wants to update the mouse cursor during a drag & drop operation.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cef.handler.CefRenderHandler

addOnPaintListener, removeOnPaintListener, setOnPaintListener

Constructor Detail

CefRenderHandlerAdapter

public CefRenderHandlerAdapter()

Method Detail

getScreenInfo

public boolean getScreenInfo(CefBrowser browser,
                             CefScreenInfo screenInfo)

Description copied from interface: CefRenderHandler

Retrieve the screen info.

Specified by:

getScreenInfo in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

screenInfo - The screenInfo

Returns:

True if this callback was handled. False to fallback to defaults.

getScreenPoint

public java.awt.Point getScreenPoint(CefBrowser browser,
                                     java.awt.Point viewPoint)

Description copied from interface: CefRenderHandler

Retrieve the screen point for the specified view point.

Specified by:

getScreenPoint in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

viewPoint - The point in the view.

Returns:

The screen point.

getViewRect

public java.awt.Rectangle getViewRect(CefBrowser browser)

Description copied from interface: CefRenderHandler

Retrieve the view rectangle.

Specified by:

getViewRect in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

Returns:

The view rectangle.

onCursorChange

public boolean onCursorChange(CefBrowser browser,
                              int cursorType)

Description copied from interface: CefRenderHandler

Handle cursor changes.

Specified by:

onCursorChange in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

cursorType - The new cursor type.

Returns:

true if the cursor change was handled.

onPaint

public void onPaint(CefBrowser browser,
                    boolean popup,
                    java.awt.Rectangle[] dirtyRects,
                    java.nio.ByteBuffer buffer,
                    int width,
                    int height)

Description copied from interface: CefRenderHandler

Handle painting.

Specified by:

onPaint in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

popup - True if painting a popup window.

dirtyRects - Array of dirty regions.

buffer - Pixel buffer for the whole window.

width - Width of the buffer.

height - Height of the buffer.

onPopupShow

public void onPopupShow(CefBrowser browser,
                        boolean show)

Description copied from interface: CefRenderHandler

Show or hide the popup window.

Specified by:

onPopupShow in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

show - True if the popup window is being shown.

onPopupSize

public void onPopupSize(CefBrowser browser,
                        java.awt.Rectangle size)

Description copied from interface: CefRenderHandler

Size the popup window.

Specified by:

onPopupSize in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

size - Size of the popup window.

startDragging

public boolean startDragging(CefBrowser browser,
                             CefDragData dragData,
                             int mask,
                             int x,
                             int y)

Description copied from interface: CefRenderHandler

Called when the user starts dragging content in the web view. Contextual information about the dragged content is supplied by dragData. OS APIs that run a system message loop may be used within the StartDragging call. Return false to abort the drag operation. Don't call any of CefBrowser-dragSource*Ended* methods after returning false. Return true to handle the drag operation. Call CefBrowser.dragSourceEndedAt and CefBrowser.ragSourceSystemDragEnded either synchronously or asynchronously to inform the web view that the drag operation has ended.

Specified by:

startDragging in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

dragData - Contextual information about the dragged content

mask - Describes the allowed operation (none, move, copy, link).

x - Coordinate within CefBrowser

y - Coordinate within CefBrowser

Returns:

false to abort the drag operation or true to handle the drag operation.

updateDragCursor

public void updateDragCursor(CefBrowser browser,
                             int operation)

Description copied from interface: CefRenderHandler

Called when the web view wants to update the mouse cursor during a drag & drop operation.

Specified by:

updateDragCursor in interface CefRenderHandler

Parameters:

browser - The browser generating the event.

operation - Describes the allowed operation (none, move, copy, link).