<![CDATA[var pdfui = new PDFUI({
// 自定义新增一个删除 annotation 的组件
fragments: [{
target: 'hand-tool',
template: 'button behind of hand-tool',
action: UIExtension.UIConsts.FRAGMENT_ACTION.AFTER,
config: [{
target: 'cus-delete-button',
callback: PDFViewCtrl.shared.createClass({
mounted: function () {
this.permissionHandler();
},
permissionHandler() {
const Events = UIExtension.UIEvents;
let permissionHandler = async () => {
const docRender = await pdfui.getPDFDocRender();
// 获取 PDF 注释权限
const userPermission = docRender.getUserPermission().getValue();
const {AnnotForm} = UIExtension.PDFViewCtrl.Consts.PDFDocPermission;
this.hasAnnotForm = (userPermission & AnnotForm) === AnnotForm;
// 是否禁用此组件
this.component[this.hasAnnotForm ? 'enable' : 'disable']();
}
this.addDestroyHook(
pdfui.addViewerEventListener(Events.openFileSuccess, permissionHandler),
pdfui.addViewerEventListener(Events.permissionChanged, permissionHandler),
pdfui.addViewerEventListener(Events.activeAnnotation, async annotRender => {
// 获取激活的 annotation
const annot = annotRender.getAnnot();
const pdfViewer = await pdfui.getPDFViewer();
// 获取 AnnotationAuthorityManager 管理器
const annotAuthMgr = pdfViewer.getAnnotAuthorityManager();
// 获取指定 annotation 的视图注释权限
const annotPermission = await annotAuthMgr.getPermission(annot);
// 是否可以删除 annot
const isDeleteAble = annotPermission.isDeletable();
// 是否禁用此组件
this.component[isDeleteAble && this.hasAnnotForm ? 'enable' : 'disable']();
})
)
}
}, UIExtension.Controller)
}]
}]
});]]>
