org.mozilla.geckoview

Interface GeckoSession.ContentDelegate

Enclosing class:

GeckoSession

public static interface GeckoSession.ContentDelegate

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	GeckoSession.ContentDelegate.ContextElement Element details for onContextMenu callbacks.

Method Summary

Modifier and Type	Method and Description
default void	onCloseRequest(GeckoSession session) A page has requested to close
default void	onContextMenu(GeckoSession session, int screenX, int screenY, GeckoSession.ContentDelegate.ContextElement element) A user has initiated the context menu via long-press.
default void	onCrash(GeckoSession session) The content process hosting this GeckoSession has crashed.
default void	onExternalResponse(GeckoSession session, WebResponse response) This is fired when there is a response that cannot be handled by Gecko (e.g., a download).
default void	onFirstComposite(GeckoSession session) Notification that the first content composition has occurred.
default void	onFirstContentfulPaint(GeckoSession session) Notification that the first content paint has occurred.
default void	onFocusRequest(GeckoSession session) A page has requested focus.
default void	onFullScreen(GeckoSession session, boolean fullScreen) A page has entered or exited full screen mode.
default void	onKill(GeckoSession session) The content process hosting this GeckoSession has been killed.
default void	onMetaViewportFitChange(GeckoSession session, String viewportFit) A viewport-fit was discovered in the content or updated after the content.
default void	onPaintStatusReset(GeckoSession session) Notification that the paint status has been reset.
default GeckoResult<SlowScriptResponse>	onSlowScript(GeckoSession geckoSession, String scriptFileName) A script has exceeded it's execution timeout value
default void	onTitleChange(GeckoSession session, String title) A page title was discovered in the content or updated after the content loaded.
default void	onWebAppManifest(GeckoSession session, JSONObject manifest) This is fired when the loaded document has a valid Web App Manifest present.

Method Detail

onTitleChange

@UiThread
default void onTitleChange(@NonNull
                                     GeckoSession session,
                                     @Nullable
                                     String title)

A page title was discovered in the content or updated after the content loaded.

Parameters:

session - The GeckoSession that initiated the callback.

title - The title sent from the content.

onFocusRequest

@UiThread
default void onFocusRequest(@NonNull
                                      GeckoSession session)

A page has requested focus. Note that window.focus() in content will not result in this being called.

Parameters:

session - The GeckoSession that initiated the callback.

onCloseRequest

@UiThread
default void onCloseRequest(@NonNull
                                      GeckoSession session)

A page has requested to close

Parameters:

session - The GeckoSession that initiated the callback.

onFullScreen

@UiThread
default void onFullScreen(@NonNull
                                    GeckoSession session,
                                    boolean fullScreen)

A page has entered or exited full screen mode. Typically, the implementation would set the Activity containing the GeckoSession to full screen when the page is in full screen mode.

Parameters:

session - The GeckoSession that initiated the callback.

fullScreen - True if the page is in full screen mode.

onMetaViewportFitChange

@UiThread
default void onMetaViewportFitChange(@NonNull
                                               GeckoSession session,
                                               @NonNull
                                               String viewportFit)

A viewport-fit was discovered in the content or updated after the content.

Parameters:

session - The GeckoSession that initiated the callback.

viewportFit - The value of viewport-fit of meta element in content.

See Also:

4.1. The viewport-fit descriptor

onContextMenu

@UiThread
default void onContextMenu(@NonNull
                                     GeckoSession session,
                                     int screenX,
                                     int screenY,
                                     @NonNull
                                     GeckoSession.ContentDelegate.ContextElement element)

A user has initiated the context menu via long-press. This event is fired on links, (nested) images and (nested) media elements.

Parameters:

session - The GeckoSession that initiated the callback.

screenX - The screen coordinates of the press.

screenY - The screen coordinates of the press.

element - The details for the pressed element.

onExternalResponse

@UiThread
default void onExternalResponse(@NonNull
                                          GeckoSession session,
                                          @NonNull
                                          WebResponse response)

This is fired when there is a response that cannot be handled by Gecko (e.g., a download).

Parameters:

session - the GeckoSession that received the external response.

response - the external WebResponse.

onCrash

@UiThread
default void onCrash(@NonNull
                               GeckoSession session)

The content process hosting this GeckoSession has crashed. The GeckoSession is now closed and unusable. You may call GeckoSession.open(GeckoRuntime) to recover the session, but no state is preserved. Most applications will want to call GeckoSession.load(org.mozilla.geckoview.GeckoSession.Loader) or GeckoSession.restoreState(SessionState) at this point.

Parameters:

session - The GeckoSession for which the content process has crashed.

onKill

@UiThread
default void onKill(@NonNull
                              GeckoSession session)

The content process hosting this GeckoSession has been killed. The GeckoSession is now closed and unusable. You may call GeckoSession.open(GeckoRuntime) to recover the session, but no state is preserved. Most applications will want to call GeckoSession.load(org.mozilla.geckoview.GeckoSession.Loader) or GeckoSession.restoreState(SessionState) at this point.

Parameters:

session - The GeckoSession for which the content process has been killed.

onFirstComposite

@UiThread
default void onFirstComposite(@NonNull
                                        GeckoSession session)

Notification that the first content composition has occurred. This callback is invoked for the first content composite after either a start or a restart of the compositor.

Parameters:

session - The GeckoSession that had a first paint event.

onFirstContentfulPaint

@UiThread
default void onFirstContentfulPaint(@NonNull
                                              GeckoSession session)

Notification that the first content paint has occurred. This callback is invoked for the first content paint after a page has been loaded, or after a onPaintStatusReset(GeckoSession) event. The function onFirstComposite(GeckoSession) will be called once the compositor has started rendering. However, it is possible for the compositor to start rendering before there is any content to render. onFirstContentfulPaint() is called once some content has been rendered. It may be nothing more than the page background color. It is not an indication that the whole page has been rendered.

Parameters:

session - The GeckoSession that had a first paint event.

onPaintStatusReset

@UiThread
default void onPaintStatusReset(@NonNull
                                          GeckoSession session)

Notification that the paint status has been reset. This callback is invoked whenever the painted content is no longer being displayed. This can occur in response to the session being paused. After this has fired the compositor may continue rendering, but may not render the page content. This callback can therefore be used in conjunction with onFirstContentfulPaint(GeckoSession) to determine when there is valid content being rendered.

Parameters:

session - The GeckoSession that had the paint status reset event.

onWebAppManifest

@UiThread
default void onWebAppManifest(@NonNull
                                        GeckoSession session,
                                        @NonNull
                                        JSONObject manifest)

This is fired when the loaded document has a valid Web App Manifest present. The various colors (theme_color, background_color, etc.) present in the manifest have been transformed into #AARRGGBB format.

Parameters:

session - The GeckoSession that contains the Web App Manifest

manifest - A parsed and validated JSONObject containing the manifest contents.

See Also:

Web App Manifest specification

onSlowScript

@UiThread
 @Nullable
default GeckoResult<SlowScriptResponse> onSlowScript(@NonNull
                                                                          GeckoSession geckoSession,
                                                                          @NonNull
                                                                          String scriptFileName)

A script has exceeded it's execution timeout value

Parameters:

geckoSession - GeckoSession that initiated the callback.

scriptFileName - Filename of the slow script

Returns:

A GeckoResult with a SlowScriptResponse value which indicates whether to allow the Slow Script to continue processing. Stop will halt the slow script. Continue will pause notifications for a period of time before resuming.