JavaScript/jQuery Diagram API
The Diagram UI component provides a visual interface to help you design new and modify existing diagrams.
Configuration
| Name | Description |
|---|---|
| autoZoomMode |
Specifies how the Diagram UI component automatically zooms the work area. |
| contextMenu |
Configures the context menu's settings. |
| contextToolbox |
Configures the context toolbox's settings. |
| customShapeComponent |
An alias for the customShapeTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information. |
| customShapeRender |
An alias for the customShapeTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information. |
| customShapes |
Provide access to an array of custom shapes. |
| customShapeTemplate |
Specifies a custom template for shapes. |
| customShapeToolboxComponent |
An alias for the customShapeToolboxTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information. |
| customShapeToolboxRender |
An alias for the customShapeToolboxTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information. |
| customShapeToolboxTemplate |
Specifies a custom template for shapes in the toolbox. |
| defaultItemProperties |
Configures default item properties. |
| disabled |
Specifies whether the UI component responds to user interaction. |
| edges |
Allows you to bind the collection of diagram edges to a data source. For more information, see the Data Binding section. |
| editing |
Specifies which editing operations a user can perform. |
| elementAttr |
Specifies the global attributes to be attached to the UI component's container element. |
| export |
Configures export settings. |
| fullScreen |
Specifies whether or not to display the UI component in full-screen mode. |
| gridSize |
Specifies the grid pitch. |
| hasChanges |
Indicates whether diagram content has unsaved changes. |
| height |
Specifies the UI component's height. |
| historyToolbar |
Configures the history toolbar's settings. |
| mainToolbar |
Configures the main toolbar settings. |
| nodes |
Allows you to bind the collection of diagram nodes to a data source. For more information, see the Data Binding section. |
| onContentReady |
A function that is executed when the UI component's content is ready and each time the content is changed. |
| onCustomCommand |
A function that is executed after a custom command item was clicked and allows you to implement the custom command's logic. |
| onDisposing |
A function that is executed before the UI component is disposed of. |
| onInitialized |
A function used in JavaScript frameworks to save the UI component instance. |
| onItemClick |
A function that is executed after a shape or connector is clicked. |
| onItemDblClick |
A function that is executed after a shape or connector is double-clicked. |
| onOptionChanged |
A function that is executed after a UI component property is changed. |
| onRequestEditOperation |
A function that allows you to prohibit an edit operation at run time. |
| onRequestLayoutUpdate |
A function that is executed after diagram data is reloaded and allows you to specify whether or not the UI component should update the diagram layout. |
| onSelectionChanged |
A function that is executed after the selection is changed in the Diagram. |
| pageColor |
Specifies the color of a diagram page. |
| pageOrientation |
Specifies the page orientation. |
| pageSize |
Specifies a size of pages. |
| propertiesPanel |
Configures the Properties panel settings. |
| readOnly |
Specifies whether the diagram is read-only. |
| rtlEnabled |
Switches the UI component to a right-to-left representation. |
| showGrid |
Specifies whether grid lines are visible. |
| simpleView |
Switch the Diagram UI component to simple view mode. |
| snapToGrid |
Specifies whether diagram elements should snap to grid lines. |
| toolbox |
Configures the toolbox settings. |
| units |
Specifies the measurement unit for size properties. |
| useNativeScrolling |
Specifies whether or not the UI component uses native scrolling. |
| viewToolbar |
Configures the view toolbar settings. |
| viewUnits |
Specifies the measurement unit that is displayed in user interface elements. |
| visible |
Specifies whether the UI component is visible. |
| width |
Specifies the UI component's width. |
| zoomLevel |
Specifies the zoom level. |
Methods
| Name | Description |
|---|---|
| beginUpdate() |
Prevents the UI component from refreshing until the endUpdate() method is called. |
| defaultOptions(rule) |
Specifies the device-dependent default configuration properties for this component. |
| dispose() |
Disposes of all the resources allocated to the Diagram instance. |
| element() |
Gets the root UI component element. |
| endUpdate() |
Refreshes the UI component after a call of the beginUpdate() method. |
| export() |
Exports the diagram data to a JSON object. |
| exportTo(format, callback) |
Exports the diagram to an image format. |
| focus() |
Sets focus on the UI component. |
| getEdgeDataSource() |
Returns the DataSource instance. |
| getInstance(element) |
Gets the instance of a UI component found using its DOM node. |
| getItemById(id) |
Returns a shape or connector object specified by its internal identifier. |
| getItemByKey(key) | |
| getItems() |
Returns an array of diagram items. |
| getNodeDataSource() |
Gets the DataSource instance. |
| getSelectedItems() |
Returns an array of selected diagram items. |
| import(data, updateExistingItemsOnly) |
Imports the diagram data. |
| instance() |
Gets the UI component's instance. Use it to access other methods of the UI component. |
| off(eventName) |
Detaches all event handlers from a single event. |
| off(eventName, eventHandler) |
Detaches a particular event handler from a single event. |
| on(eventName, eventHandler) |
Subscribes to an event. |
| on(events) |
Subscribes to events. |
| option() |
Gets all UI component properties. |
| option(optionName) |
Gets the value of a single property. |
| option(optionName, optionValue) |
Updates the value of a single property. |
| option(options) |
Updates the values of several properties. |
| repaint() |
Repaints the UI component without reloading data. Call it to update the UI component's markup. |
| resetOption(optionName) |
Resets a property to its default value. |
| scrollToItem(item) |
Scrolls the view area to the specified item. |
| setSelectedItems(items) |
Selects the specified items. |
| updateToolbox() |
Updates the diagram toolboxes. |
Events
| Name | Description |
|---|---|
| contentReady |
Raised when the UI component's content is ready. |
| customCommand |
Raised after a custom command item was clicked and allows you to implement custom command logic. |
| disposing |
Raised before the UI component is disposed of. |
| initialized |
Raised only once, after the UI component is initialized. |
| itemClick |
Raised after a shape or connector is clicked. |
| itemDblClick |
Raised after a shape or connector is double-clicked. |
| optionChanged |
Raised after a UI component property is changed. |
| requestEditOperation |
Raised before a user edits a diagram and before the UI related to an edit operation is updated. Requests clarification about edit operation availability. |
| requestLayoutUpdate |
Raised after diagram data has been changed and requests whether the UI component should update the diagram layout. |
| selectionChanged |
Raised after the selection is changed in the Diagram. |
If you have technical questions, please create a support ticket in the DevExpress Support Center.