BrowserWidget

classin packageklyn.gui.windows.browser

public class BrowserWidget extends Canvas:

Widget

└ Canvas

└ BrowserWidget

Embedded HTML/CSS/JS document viewer implemented by the Klyn GUI stack.

BrowserWidget provides local and remote navigation, history, link activation, scrolling, page zoom, images and a deterministic DOM scripting profile without adding a third-party browser dependency. Its retained display list keeps scrolling and repainting independent from HTML parsing and CSS layout. Documents without an explicit CSS font use the same default font and size as the active menu-bar theme.

Example

import klyn.gui.windows.browser

browser = BrowserWidget("file:///opt/klyn/docs/api/index.html")
browser.navigationFailed += lambda(event: BrowserNavigationErrorEvent): print(event.message)

Properties

Modifier and Type	Member	Description
public property	allowScripts `allowScripts as Boolean:`	Whether inline and external scripts may use the embedded DOM profile.
public readonly property	canGoBack `canGoBack as Boolean:`	Whether `goBack()` can select an older history entry.
public readonly property	canGoForward `canGoForward as Boolean:`	Whether `goForward()` can select a newer history entry.
public readonly property	documentTitle `documentTitle as String:`	Current document title.
public readonly property	history `history as BrowserHistory:`	Navigation history retained by this browser.
public property	homeUrl `homeUrl as String:`	URL opened by `goHome()`.
public readonly property	isLoading `isLoading as Boolean:`	Whether a page is currently loading in the background.
public readonly property	scrollX `scrollX as Int:`	Horizontal document scroll position in CSS pixels.
public readonly property	scrollY `scrollY as Int:`	Vertical document scroll position in CSS pixels.
public readonly property	statusText `statusText as String:`	Current status text, usually the link under the pointer.
public property	userStyleSheet `userStyleSheet as String:`	CSS rules supplied by the host application for the displayed document.
public property	zoomFactor `zoomFactor as Double:`	Page-specific zoom factor, clamped to `0.25 .. 5.0`.

Inherited Properties

Signals

Modifier and Type	Member	Description
public signal property	url `url as String:`	Current effective document URL.

Events

Modifier and Type	Member	Description
public event	documentCompleted `documentCompleted as BrowserNavigationEvent`	Emitted after styles, scripts and layout are ready for painting.
public event	navigated `navigated as BrowserNavigationEvent`	Emitted after the main page and blocking resources have loaded.
public event	navigating `navigating as BrowserNavigationEvent`	Emitted immediately before a navigation starts.
public event	navigationFailed `navigationFailed as BrowserNavigationErrorEvent`	Emitted when the requested document cannot be loaded.

Inherited Events

eventInherited Events from Widget: keyPressed, keyReleased, mouseMoved, mousePressed, mouseReleased, mouseWheel, paintRequested, resized

Constructors

Modifier and Type	Member	Description
public	BrowserWidget `BrowserWidget(url as String = "about:blank"):`	Creates an embedded browser and optionally starts navigation.

Methods

Modifier and Type	Member	Description
public	executeScript `executeScript(script as String) as String:`	Executes the embedded DOM scripting profile against the current page.
public	goBack `goBack() as Boolean:`	Navigates to the previous history entry.
public	goForward `goForward() as Boolean:`	Navigates to the following history entry.
public	goHome `goHome() as Void:`	Navigates to `homeUrl`.
public	navigate `navigate(url as String) as Void:`	Starts asynchronous navigation to an absolute URL, relative URL or path.
public	navigateToString `navigateToString(html as String, baseUrl as String = "about:blank", appendHistory as Boolean = true) as Void:`	Loads an in-memory HTML document without filesystem or network access.
public override	paint `paint(painter as Painter) as Void:`	Paints the retained browser display list.
public	refresh `refresh() as Void:`	Reloads the current URL without adding a history entry.
public	scrollBy `scrollBy(deltaX as Int, deltaY as Int) as Void:`	Scrolls relative to the current CSS-pixel position.
public	scrollTo `scrollTo(x as Int, y as Int) as Void:`	Scrolls the document to CSS-pixel coordinates.
public	stop `stop() as Void:`	Cancels the active network or file navigation.

Inherited Methods

methodInherited Methods from Widget: blur, containsPoint, emitKeyPressed, emitKeyReleased, emitMouseMoved, emitMousePressed, emitMouseReleased, emitMouseWheel, handleTabKey, notifyPaintRequested, paint, paintClipped, paintOverlay, repaint, requestFocus, resolvePreferredHeight, resolvePreferredWidth, resolvedFont, setBounds