A panel that contains a webview.
Whether the panel is active (focused by the user).
Icon for the panel shown in UI.
Fired when the panel's view state changes.
Fired when the panel is disposed.
This may be because the user closed the panel or because
called on it.
Trying to use the panel after it has been disposed throws an exception.
Title of the panel shown in UI.
Identifies the type of the webview panel.
Whether the panel is visible.
Webview belonging to the panel.
Dispose of the webview panel.
This closes the panel if it showing and disposes of the resources owned by the webview.
Webview panels are also disposed when the user closes the webview panel. Both cases
Show the webview panel.
true, the webview will not take focus.