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import type { HyperlinkToolTip } from './HyperlinkToolTip';
import type {
DOMHelper,
EditorPlugin,
IEditor,
PluginEvent,
LinkData,
} from 'roosterjs-content-model-types';
const defaultToolTipCallback: HyperlinkToolTip = (url: string) => url;
/**
* Hyperlink plugin does the following jobs for a hyperlink in editor:
* 1. When hover on a link, show a tool tip
* 2. When Ctrl+Click on a link, open a new window with the link
* 3. When type directly on a link whose text matches its link url, update the link url with the link text
*/
export class HyperlinkPlugin implements EditorPlugin {
private editor: IEditor | null = null;
private domHelper: DOMHelper | null = null;
private isMac: boolean = false;
private disposer: (() => void) | null = null;
private currentNode: Node | null = null;
private currentLink: HTMLAnchorElement | null = null;
/**
* Create a new instance of HyperLink class
* @param tooltip Tooltip to show when mouse hover over a link
* Default value is to return the href itself. If null, there will be no tooltip text.
* @param target (Optional) Target window name for hyperlink. If null, will use "_blank"
* @param onLinkClick (Optional) Open link callback (return false to use default behavior)
*/
constructor(
private tooltip: HyperlinkToolTip = defaultToolTipCallback,
private target?: string,
private onLinkClick?: (anchor: HTMLAnchorElement, mouseEvent: MouseEvent) => boolean | void
) {}
/**
* Get a friendly name of this plugin
*/
getName() {
return 'Hyperlink';
}
/**
* Initialize this plugin
* @param editor The editor instance
*/
public initialize(editor: IEditor): void {
this.editor = editor;
this.domHelper = editor.getDOMHelper();
this.isMac = !!editor.getEnvironment().isMac;
this.disposer = editor.attachDomEvent({
mouseover: { beforeDispatch: this.onMouse },
mouseout: { beforeDispatch: this.onMouse },
});
}
/**
* Dispose this plugin
*/
public dispose(): void {
Iif (this.disposer) {
this.disposer();
this.disposer = null;
}
this.currentNode = null;
this.currentLink = null;
this.editor = null;
}
/**
* Handle events triggered from editor
* @param event PluginEvent object
*/
public onPluginEvent(event: PluginEvent): void {
let matchedLink: LinkData | null;
if (event.eventType == 'keyDown') {
const selection = this.editor?.getDOMSelection();
const node =
selection?.type == 'range' ? selection.range.commonAncestorContainer : null;
Eif (node && node != this.currentNode) {
this.currentNode = node;
this.currentLink = null;
this.runWithHyperlink(node, (href, a) => {
if (
node.textContent &&
(matchedLink = matchLink(node.textContent)) &&
matchedLink.normalizedUrl == href
) {
this.currentLink = a;
}
});
}
} else if (event.eventType == 'keyUp') {
const selection = this.editor?.getDOMSelection();
const node =
selection?.type == 'range' ? selection.range.commonAncestorContainer : null;
if (
node &&
node == this.currentNode &&
this.currentLink &&
this.currentLink.contains(node) &&
node.textContent &&
(matchedLink = matchLink(node.textContent))
) {
this.currentLink.setAttribute('href', matchedLink.normalizedUrl);
}
} else if (event.eventType == 'mouseUp' && event.isClicking) {
this.runWithHyperlink(event.rawEvent.target as Node, (href, anchor) => {
if (
!this.onLinkClick?.(anchor, event.rawEvent) &&
this.isCtrlOrMetaPressed(event.rawEvent) &&
event.rawEvent.button === 0
) {
event.rawEvent.preventDefault();
const target = this.target || '_blank';
const window = this.editor?.getDocument().defaultView;
try {
window?.open(href, target);
} catch {}
}
});
} else if (event.eventType == 'contentChanged') {
this.domHelper?.setDomAttribute('title', null /*value*/);
}
}
protected onMouse = (e: Event) => {
this.runWithHyperlink(e.target as Node, (href, a) => {
const tooltip =
e.type == 'mouseover'
? typeof this.tooltip == 'function'
? this.tooltip(href, a)
: this.tooltip
: null;
this.domHelper?.setDomAttribute('title', tooltip);
});
};
private runWithHyperlink(node: Node, callback: (href: string, a: HTMLAnchorElement) => void) {
const a = this.domHelper?.findClosestElementAncestor(
node,
'a[href]'
) as HTMLAnchorElement | null;
const href = a?.getAttribute('href');
if (href && a) {
callback(href, a);
}
}
private isCtrlOrMetaPressed(event: KeyboardEvent | MouseEvent): boolean {
return this.isMac ? event.metaKey : event.ctrlKey;
}
}
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