MODULE ZWT @public

summary

Zimbu Web Toolkit. A GUI in a web browser.

CLASS	Element @public	Lowest level object, an HTML element.
CLASS	JsEvent @public	Lowest level object, a Javascript event.
CLASS	UIObject @public	Lowest level ZWT object. Wraps an HTML Element. Cannot handle events.
CLASS	Widget @public	A UIObject that handles events and can be added to panels.
CLASS	Event @public	An event that can be triggered and acted upon.
ENUM	EventType @public	Used in the Event class.
CLASS	Panel @public	A Widget that contains one or more other widgets. How they are ordered is defined by subclasses.
CLASS	HorizontalPanel @public	A panel that stacks its children horizontally: a row of Widgets.
CLASS	ScrollPanel @public	A panel that provides control over scrollbars.
CLASS	PopupPanel @public	A panel that goes on top of other panels.
CLASS	VerticalPanel @public	A panel that stacks its children vertically: a column of Widgets.
CLASS	NoButtonDialog @public	A dialog with one Widget only. It has a background that covers the whole page, only interaction with the dialog is possible.
CLASS	SimpleDialog @public	A Dialog with one Widget and an OK button.
CLASS	OkCancelDialog @public	A Dialog with one Widget and two buttons: OK and Cancel.
CLASS	TableCell @public	A cell in a Table.
CLASS	TableRow @public	A row in the table.
CLASS	Table @public	A table can hold a Widget in each cell. The number of columns and rows is adjusted dynamically.
CLASS	Label @public	A Label is a simple widget that contains text, a HTML SPAN.
CLASS	TextBlock @public	A TextBlock is a simple widget that contains text, a HTML DIV.
CLASS	Button @public	A simple button that can call a procedure when clicked.
CLASS	Code @public	A Code is a widget that contains preformatted text.
CLASS	Input @public	A Input is a widget that contains one line of editable text.
CLASS	Checkbox @public	A Checkbox is a widget that has two states: Checked or not.
CLASS	Dropdown @public	A Dropdown is a widget that allows selecting one item in a list.
CLASS	Textarea @public	A Textarea is a widget that contains editable text.
CLASS	Color @public	Specifies a color to be used for a Style.
ENUM	ColorName @public	Values to be used when creating a Color object.
ENUM	Unit @public	Values to be used when setting a size.
ENUM	BorderStyle @public	Values to be used in setBorder() and setBorderStyle().
ENUM	HorAlign @public	Horizontal alignment.
ENUM	VerAlign @public	Vertical alignment.
CLASS	Style @public	A style to be attached to a Widget or Table cell. Specifies various properties for the item.
INTERFACE	I_Controller @public
CLASS	ListController<Titem> @public	Display a list of items in a Panel.
INTERFACE	I_WidgetBuilder<Titem> @public	Interface for a builder that can create a Widget from a Titem.

	root() ZWT.AbsolutePanel @public	Get the toplevel Panel. Widgets added to this will appear in the page.
	alert(message) @public	Open a popup window to display message.
	error(message) @public	Abort execution with an error, displayed in the JS console.
	setCloseHandler(handler) @public	Install handler to be called when the page is about to be abandoned.
	close() @public	Abort execution of the UI.
	createPage(server, path, title, moduleType) @public	Create the HTML page that selects the Javascript file to load. Makes all necessary items available through server.

members (alphabetically)

PROC alert(string message) @public

Open a popup window to display message.

PROC close() @public

Abort execution of the UI.

PROC createPage(HTTP.Server server, string path, string title, type moduleType) @public

Create the HTML page that selects the Javascript file to load. Makes all necessary items available through server.

path is the path under which the page will be available, e.g. "index.html".

title is the page title.

moduleType is the type of the module of the page to be displayed. This is only used by the server, not by the Javascript files.

Example for http://localhost/index.html displaying the page created by MyZwtModule:

 HTTP.Server server = NEW(80)
 ZWT.createPage(server, "index.html", "My ZWT page", MyZwtModule.Type()

PROC error(string message) @public

Abort execution with an error, displayed in the JS console.

FUNC root() ZWT.AbsolutePanel @public

Get the toplevel Panel. Widgets added to this will appear in the page.

PROC setCloseHandler(func< => string> handler) @public

Install handler to be called when the page is about to be abandoned.

When the user closes the window, tab or leaves the page in another way, the handler will be called. If it returns NIL or an empty string the close will continue. If it returns a non-empty string a dialog will popup to ask the user if he really wants to close the window.

Example:

 ZWT.setCloseHandler({ => isChanged()
                       ? "There are unsaved changes."
                       : NIL })

credits

The Class hierarchy, generated Javascript and a few other things are based on the Google Web Toolkit. http://code.google.com/webtoolkit/overview.html

license

Licensed under the Apache License, Version 2.0. See the LICENSE file or obtain a copy at: http://www.apache.org/licenses/LICENSE-2.0