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Enhancement: Clicking a PDF annotation link now causes an immediate j…
…ump to the annotation in markdown-source-view (#258) * Clicking a PDF annotation link now causes an immediate jump to the annotation in markdown-source-view
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,197 @@ | ||
| import { | ||
| MarkdownView, | ||
| TFile, | ||
| parseLinktext | ||
| } from 'obsidian'; | ||
| import AnnotatorPlugin from 'main'; | ||
|
|
||
| export default class SourceViewObserver { | ||
| private plugin: AnnotatorPlugin; | ||
| private tmpLinkInfos: {linkText: string; count: number}[] = []; | ||
| private tmpTargetIndex = -1; | ||
| private targetClassNameSet: Set<string> = new Set(); | ||
| private observer: MutationObserver; | ||
|
|
||
| constructor(plugin: AnnotatorPlugin) { | ||
| this.plugin = plugin; | ||
| this.initClassNameSet(); | ||
| this.initObserver(); | ||
| } | ||
|
|
||
| initClassNameSet() { | ||
| const prefixObservedClassName = [ | ||
| 'cm-highlight ', 'cm-em ', | ||
| 'cm-header cm-header-1 ', 'cm-header cm-header-2 ', 'cm-header cm-header-3 ', | ||
| 'cm-header cm-header-4 ', 'cm-header cm-header-5 ', 'cm-header cm-header-6 ' | ||
| ]; | ||
| const suffixObservedClassName = [ | ||
| '', | ||
| ' cm-list-1', ' cm-list-2', ' cm-list-3', | ||
| ' cm-quote cm-quote-1', ' cm-strong' | ||
| ]; | ||
| const baseTargetClassName = 'cm-hmd-internal-link cm-link-alias'; | ||
| for (const className of prefixObservedClassName) { | ||
| this.targetClassNameSet.add(className + baseTargetClassName); | ||
| } | ||
| for (const className of suffixObservedClassName) { | ||
| this.targetClassNameSet.add(baseTargetClassName + className); | ||
| } | ||
| } | ||
|
|
||
| initObserver() { | ||
| const activeLeaf = this.plugin.app.workspace.getActiveViewOfType(MarkdownView); | ||
| if (!activeLeaf) return; | ||
|
|
||
| const that = this; | ||
| const observedClassName = 'cm-hmd-internal-link cm-link-has-alias'; | ||
| const targetClassName = 'cm-hmd-internal-link cm-link-alias'; | ||
| const filePath = this.plugin.app.workspace.getActiveFile().path; | ||
| const observeCallback = function(mutations: MutationRecord[]) { | ||
| that.plugin.log('-----------------------------'); | ||
| for (const mutation of mutations) { | ||
| if (mutation.type == 'childList') { | ||
| for (const addedNode of mutation.addedNodes) { | ||
| const addedElement = addedNode as Element; | ||
| if (addedElement.className && addedElement.className.indexOf(observedClassName) >= 0) { | ||
| that.linkOnFocus(addedElement); | ||
| } | ||
| } | ||
| for (const removedNode of mutation.removedNodes) { | ||
| const removedElement = removedNode as Element; | ||
| if (removedElement.className && removedElement.className.indexOf(observedClassName) >= 0) { | ||
| const removedLinkText = removedElement.textContent; | ||
| that.plugin.log('remove'); | ||
| that.linkOnBlur(mutation.target as Element, removedLinkText, filePath, targetClassName); | ||
| } | ||
| } | ||
| } else if (mutation.type == 'attributes') { | ||
| if (mutation.oldValue && mutation.oldValue.indexOf(observedClassName) >= 0) { | ||
| that.plugin.log('attri'); | ||
| that.linkOnBlur(mutation.target.parentNode as Element, '', filePath, targetClassName); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| this.observer = new MutationObserver(observeCallback); | ||
| } | ||
|
|
||
| getObserver(): MutationObserver { | ||
| return this.observer; | ||
| } | ||
|
|
||
| setObserver(observer: MutationObserver) { | ||
| this.observer = observer; | ||
| } | ||
|
|
||
| watch() { | ||
| const activeLeaf = this.plugin.app.workspace.getActiveViewOfType(MarkdownView); | ||
| if (!activeLeaf) return; | ||
|
|
||
| const regex2Find = /(?<=[\[]{2})[^\]]*(?=[\]]{2})/gm; | ||
| const filePath = this.plugin.app.workspace.getActiveFile().path; | ||
| const view = activeLeaf.leaf.view.containerEl; | ||
| const editor = activeLeaf.editor; | ||
| const oldText = editor.getValue(); | ||
| const linkHref = oldText.match(regex2Find); | ||
| if(!linkHref || linkHref.length == 0) return; | ||
|
|
||
| const tempSourceLinks = view.getElementsByClassName('cm-hmd-internal-link cm-link-alias') as HTMLCollectionOf<HTMLAnchorElement>; | ||
| const length = tempSourceLinks.length; | ||
| const sourceLinks = []; | ||
| if (length > 1) { | ||
| let prev = tempSourceLinks[0]; | ||
| for (let i = 1; i < length; i++) { | ||
| if (tempSourceLinks[i - 1].nextElementSibling != tempSourceLinks[i]) { | ||
| sourceLinks.push(prev); | ||
| prev = tempSourceLinks[i]; | ||
| if (i == length - 1) { | ||
| sourceLinks.push(tempSourceLinks[i]); | ||
| } | ||
| } else if (i == length - 1) { | ||
| sourceLinks.push(prev); | ||
| } | ||
| } | ||
| } else { | ||
| sourceLinks.push(tempSourceLinks[0]); | ||
| } | ||
|
|
||
| const observeConfig = { | ||
| attributeFilter: ['class'], | ||
| attributes: true, | ||
| characterData: true, | ||
| characterDataOldValue: true, | ||
| childList: true, | ||
| attributeOldValue: true, | ||
| subtree: true | ||
| }; | ||
|
|
||
| for (let i = 0; i < sourceLinks.length; i++) { | ||
| const tempLink = linkHref[i]; | ||
| if (typeof tempLink != 'string') continue; | ||
| const parsedLink = parseLinktext(tempLink.split('|')[0]); | ||
| const annotationid = parsedLink.subpath.startsWith('#^') ? parsedLink.subpath.substring(2) : null; | ||
| const file: TFile | null = this.plugin.app.metadataCache.getFirstLinkpathDest(parsedLink.path, filePath); | ||
|
|
||
| if (this.plugin.isAnnotationFile(file)) { | ||
| this.addClickListener(sourceLinks[i], annotationid, file, false); | ||
| this.observer.observe(sourceLinks[i].parentNode, observeConfig); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| addClickListener(element: HTMLAnchorElement, annotationid: string, file: TFile, isReadingView: boolean) { | ||
| const childs = element.children; | ||
| if (isReadingView || childs && childs.length == 1) { | ||
| element.addEventListener('click', ev => { | ||
| this.plugin.log(annotationid); | ||
| ev.preventDefault(); | ||
| ev.stopPropagation(); | ||
| ev.stopImmediatePropagation(); | ||
| const inNewPane = ev.metaKey || ev.ctrlKey || ev.button == 1; | ||
| this.plugin.openAnnotationTarget(file, inNewPane, annotationid); | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| linkOnFocus(element: Element) { | ||
| let count = 0; | ||
| const linkText = element.textContent; | ||
| while(element.className && element.className.indexOf('cm-formatting-link cm-formatting-link-end') == -1) { | ||
| if (this.targetClassNameSet.has(element.className)) count++; | ||
| element = element.nextElementSibling; | ||
| } | ||
| this.tmpLinkInfos.push({linkText: linkText, count: count}); | ||
| } | ||
|
|
||
| linkOnBlur(node: Element, rawLinkText: string, filePath: string, className: string) { | ||
| const linkIndex = this.tmpTargetIndex + 1; | ||
| if (this.tmpLinkInfos.length == 0) return; | ||
| const linkInfo = this.tmpLinkInfos[0]; | ||
|
|
||
| const link = parseLinktext(rawLinkText == '' ? linkInfo.linkText : rawLinkText); | ||
| const annotationid = link.subpath.startsWith('#^') ? link.subpath.substring(2) : null; | ||
| const file: TFile | null = this.plugin.app.metadataCache.getFirstLinkpathDest(link.path, filePath); | ||
|
|
||
| const targets = node.getElementsByClassName(className) as HTMLCollectionOf<HTMLAnchorElement>; | ||
| const uniqueTarget = targets[linkIndex]; | ||
| this.plugin.log( | ||
| 'linkText: ' + link.path + | ||
| ' tarIndex: ' + this.tmpTargetIndex + | ||
| ' linkIndex: ' + linkIndex + | ||
| ' size: ' + this.tmpLinkInfos.length | ||
| ); | ||
| this.plugin.log(uniqueTarget); | ||
|
|
||
| this.tmpTargetIndex += linkInfo.count; | ||
|
|
||
| this.addClickListener(uniqueTarget, annotationid, file, false); | ||
|
|
||
| this.tmpLinkInfos.splice(0, 1); | ||
| if (this.tmpLinkInfos.length == 0) this.resetTmpLinkInfo(); | ||
| } | ||
|
|
||
| resetTmpLinkInfo() { | ||
| this.tmpTargetIndex = -1; | ||
| this.tmpLinkInfos.length = 0; | ||
| } | ||
| } |