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43212a4487
...
eb5fc1c59e
2 changed files with 398 additions and 0 deletions
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Before Width: | Height: | Size: 15 KiB |
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@ -86,6 +86,404 @@ export class Notes2 extends Component {
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}//}}}
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}
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class Tree extends Component {
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constructor(props) {//{{{
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super(props)
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console.log('new tree')
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this.treeNodeComponents = {}
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this.treeTrunk = []
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this.selectedNode = null
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this.expandedNodes = {} // keyed on UUID
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this.treeDiv = createRef()
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// childrenFetchedCallbacks is keyed on a UUID and each
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// item is an array with callbacks called when a UUID has
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// had all children fetched.
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this.childrenFetchedCallbacks = {}
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this.props.app.tree = this
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this.populateFirstLevel()
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}//}}}
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render({ app }) {//{{{
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const renderedTreeTrunk = this.treeTrunk.map(node => {
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this.treeNodeComponents[node.UUID] = createRef()
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return html`<${TreeNode} key=${`treenode_${node.UUID}`} tree=${this} node=${node} ref=${this.treeNodeComponents[node.UUID]} selected=${node.UUID === app.state.startNode?.UUID} />`
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})
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return html`
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<div id="tree" ref=${this.treeDiv} tabindex="0">
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<div id="logo" onclick=${() => _notes2.current.goToNode(ROOT_NODE)}><img src="/images/${_VERSION}/logo.svg" /></div>
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<div class="icons">
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<img src="/images/${_VERSION}/icon_search.svg" style="height: 22px" onclick=${() => _mbus.dispatch('op-search')} />
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<img src="/images/${_VERSION}/icon_refresh.svg" onclick=${() => _sync.run()} />
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</div>
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${renderedTreeTrunk}
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</div>`
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}//}}}
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componentDidMount() {//{{{
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//this.treeDiv.current.addEventListener('keydown', event => this.keyHandler(event))
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// This will show and select the treenode that is selected in the node UI.
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const node = _notes2.current?.nodeUI.current?.node.value
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if (node === null)
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return
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_notes2.current.tree.expandToTrunk(node)
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this.setSelected(node)
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}//}}}
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fetchChildrenNotify(uuid, fn) {//{{{
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if (this.childrenFetchedCallbacks[uuid] === undefined)
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this.childrenFetchedCallbacks[uuid] = [fn]
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else
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this.childrenFetchedCallbacks[uuid].push(fn)
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}//}}}
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fetchChildrenOn(uuid) {//{{{
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if (this.childrenFetchedCallbacks[uuid] === undefined)
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return
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for (const fn of this.childrenFetchedCallbacks[uuid])
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fn(uuid)
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delete this.childrenFetchedCallbacks[uuid]
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}//}}}
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populateFirstLevel(callback = null) {//{{{
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nodeStore.get(ROOT_NODE)
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.then(node => node.fetchChildren())
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.then(children => {
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this.treeNodeComponents = {}
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this.treeTrunk = []
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for (const node of children) {
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// The root node isn't supposed to be shown in the tree.
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if (node.UUID === ROOT_NODE)
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continue
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if (node.ParentUUID === ROOT_NODE)
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this.treeTrunk.push(node)
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}
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this.forceUpdate()
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if (callback)
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callback()
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})
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.catch(e => { console.log(e); console.log(e.type, e.error); alert(e.error) })
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}//}}}
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setSelected(node, dontExpand) {//{{{
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// The previously selected node, if any, needs to be rerendered
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// to not retain its 'selected' class.
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const prevUUID = this.selectedNode?.UUID
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this.selectedNode = node
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if (prevUUID)
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this.treeNodeComponents[prevUUID]?.current.forceUpdate()
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// And now the newly selected node is rerendered.
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this.treeNodeComponents[node.UUID]?.current.forceUpdate()
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if (!dontExpand)
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this.setNodeExpanded(node, true)
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}//}}}
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isSelected(node) {//{{{
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return this.selectedNode?.UUID === node.UUID
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}//}}}
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async expandToTrunk(node) {//{{{
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// Get all ancestors from a certain node up to the highest grandparent.
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const ancestry = await nodeStore.getNodeAncestry(node, [])
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for (const i in ancestry) {
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await nodeStore.node(ancestry[i].UUID).fetchChildren()
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this.setNodeExpanded(ancestry[i], true)
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}
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// Already a top node, no need to expand anything.
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if (ancestry.length === 0)
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return
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// Start the chain of by expanding the top node.
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this.setNodeExpanded(ancestry[ancestry.length - 1], true)
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}//}}}
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getNodeExpanded(UUID) {//{{{
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if (this.expandedNodes[UUID] === undefined)
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this.expandedNodes[UUID] = signal(false)
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return this.expandedNodes[UUID].value
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}//}}}
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async setNodeExpanded(node, value) {//{{{
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return new Promise((resolve, reject) => {
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const work = uuid => {
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// Creating a default value if it doesn't exist already.
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this.getNodeExpanded(uuid)
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this.expandedNodes[uuid].value = value
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resolve()
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}
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if (node.hasFetchedChildren()) {
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work(node.UUID)
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return
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} else {
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this.fetchChildrenNotify(node.UUID, uuid => work(uuid))
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}
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})
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}//}}}
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getParentWithNextSibling(node) {//{{{
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let currNode = node
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while (currNode !== null && currNode.UUID !== ROOT_NODE && currNode.getSiblingAfter() === null) {
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currNode = currNode.getParent()
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}
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return currNode?.getSiblingAfter()
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}//}}}
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getLastExpandedNode(node) {//{{{
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let currNode = node
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while (this.getNodeExpanded(currNode.UUID) && currNode.hasChildren()) {
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currNode = currNode.Children[currNode.Children.length - 1]
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}
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return currNode
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}//}}}
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async recursiveExpand(node, state) {//{{{
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if (state)
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await this.setNodeExpanded(node, true)
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for (const child of node.Children)
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await this.recursiveExpand(child, state)
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if (!state)
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await this.setNodeExpanded(node, false)
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}//}}}
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async keyHandler(event) {//{{{
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let handled = true
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const n = this.selectedNode
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const Space = ' '
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// This handler would otherwise react to stuff like Ctrl+L.
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if (event.ctrlKey || event.altKey)
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return
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switch (event.key) {
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// Space and enter is toggling expansion.
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// Holding shift down does it recursively.
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case Space:
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case 'Enter':
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const expanded = this.getNodeExpanded(n.UUID)
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if (event.shiftKey) {
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this.recursiveExpand(n, !expanded)
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} else {
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this.setNodeExpanded(n, !expanded)
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}
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break
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case 'g':
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case 'Home':
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this.navigateTop()
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break
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case 'G':
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case 'End':
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this.navigateBottom()
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break
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case 'j':
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case 'ArrowDown':
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await this.navigateDown(this.selectedNode)
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break
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case 'k':
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case 'ArrowUp':
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await this.navigateUp(this.selectedNode)
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break
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case 'h':
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case 'ArrowLeft':
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await this.navigateLeft(this.selectedNode)
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break
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case 'l':
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case 'ArrowRight':
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await this.navigateRight(this.selectedNode)
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break
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default:
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// nonsole.log(event.key)
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handled = false
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}
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if (handled) {
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event.preventDefault()
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event.stopPropagation()
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}
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}//}}}
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async navigateLeft(n) {//{{{
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if (n === null)
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return
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const expanded = this.getNodeExpanded(n.UUID)
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if (expanded && n.hasChildren()) {
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this.setNodeExpanded(n, false)
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return
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}
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if (n.isFirstSibling() && n.getParent().UUID !== ROOT_NODE) {
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await _notes2.current.goToNode(n.getParent()?.UUID, true, true)
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return
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}
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const siblingBefore = n.getSiblingBefore()
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const siblingExpanded = this.getNodeExpanded(siblingBefore?.UUID)
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if (siblingBefore !== null && siblingExpanded && siblingBefore.hasChildren()) {
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const siblingAbove = this.getLastExpandedNode(siblingBefore)
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await _notes2.current.goToNode(siblingAbove?.UUID, true, true)
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return
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}
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await _notes2.current.goToNode(n.getSiblingBefore()?.UUID, true, true)
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}//}}}
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async navigateRight(n) {//{{{
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if (n === null)
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return
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const siblingAfter = n.getSiblingAfter()
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const expanded = this.getNodeExpanded(n.UUID)
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if (!expanded && n.hasChildren()) {
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this.setNodeExpanded(n, true)
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return
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}
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if (expanded && n.hasChildren()) {
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await _notes2.current.goToNode(n.Children[0]?.UUID, true, true)
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return
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}
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if (n.isLastSibling()) {
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const nextNode = this.getParentWithNextSibling(n)
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await _notes2.current.goToNode(nextNode?.UUID, true, true)
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return
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}
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await _notes2.current.goToNode(n.getSiblingAfter()?.UUID, true, true)
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}//}}}
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async navigateUp(n) {//{{{
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if (n === null)
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return
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let parent = null
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const siblingBefore = n.getSiblingBefore()
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let siblingExpanded = false
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if (siblingBefore !== null)
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siblingExpanded = this.getNodeExpanded(siblingBefore.UUID)
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if (n.isFirstSibling()) {
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parent = n.getParent()
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if (parent?.UUID === ROOT_NODE)
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return
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await _notes2.current.goToNode(parent?.UUID, true, true)
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return
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}
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if (siblingBefore !== null && siblingExpanded && siblingBefore.hasChildren()) {
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await _notes2.current.goToNode(siblingBefore.Children[siblingBefore.Children.length - 1]?.UUID, true, true)
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return
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}
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if (siblingBefore) {
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await _notes2.current.goToNode(siblingBefore.UUID, true, true)
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return
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}
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}//}}}
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async navigateDown(n) {//{{{
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if (n === null)
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return
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const nodeExpanded = this.getNodeExpanded(n.UUID)
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// Last node, not expanded, so it matters not whether it has children or not.
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// Traverse upward to nearest parent with next sibling.
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if (!nodeExpanded && n.isLastSibling()) {
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const wantedNode = this.getParentWithNextSibling(n)
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await _notes2.current.goToNode(wantedNode?.UUID, true, true)
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return
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}
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if (nodeExpanded && n.isLastSibling() && !n.hasChildren()) {
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const wantedNode = this.getParentWithNextSibling(n)
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await _notes2.current.goToNode(wantedNode?.UUID, true, true)
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return
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}
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// Node not expanded. Go to this node's next sibling.
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// GoToNode will abort if given null.
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if (!nodeExpanded || !n.hasChildren()) {
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await _notes2.current.goToNode(n.getSiblingAfter()?.UUID, true, true)
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return
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}
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// Node is expanded.
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// Children will be visually beneath this node, if any.
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if (nodeExpanded && n.hasChildren()) {
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await _notes2.current.goToNode(n.Children[0].UUID, true, true)
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return
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}
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}//}}}
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async navigateTop() {//{{{
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const root = await nodeStore.get(ROOT_NODE)
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if (root.Children.length === 0)
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return
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await _notes2.current.goToNode(root.Children[0]?.UUID, true, true)
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}//}}}
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async navigateBottom() {//{{{
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const root = await nodeStore.get(ROOT_NODE)
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if (root.Children.length === 0)
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return
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const toplevel = root.Children[root.Children.length - 1]
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const toplevelExpanded = this.getNodeExpanded(toplevel?.UUID)
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if (toplevelExpanded) {
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const lastnode = this.getLastExpandedNode(toplevel)
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await _notes2.current.goToNode(lastnode?.UUID, true, true)
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} else
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await _notes2.current.goToNode(root.Children[root.Children.length - 1]?.UUID, true, true)
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}//}}}
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}
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class TreeNode extends Component {
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constructor(props) {//{{{
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super(props)
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this.children_populated = signal(false)
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if (this.props.node.Level === 0 || this.props.tree.getNodeExpanded(this.props.node.UUID))
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this.fetchChildren()
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}//}}}
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render({ tree, node, parent }) {//{{{
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// Fetch the next level of children if the parent tree node is expanded and our children thus will be visible.
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const selected = tree.isSelected(node) ? 'selected' : ''
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if (!this.children_populated.value && tree.getNodeExpanded(parent?.props.node.UUID))
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this.fetchChildren()
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const children = node.Children.map(node => {
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tree.treeNodeComponents[node.UUID] = createRef()
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return html`<${TreeNode} key=${`treenode_${node.UUID}`} tree=${tree} node=${node} parent=${this} ref=${tree.treeNodeComponents[node.UUID]} selected=${node.UUID === tree.props.app.startNode?.UUID} />`
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})
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let expandImg = ''
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if (node.Children.length === 0)
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expandImg = html`<img src="/images/${window._VERSION}/leaf.svg" />`
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else {
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if (tree.getNodeExpanded(node.UUID))
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expandImg = html`<img src="/images/${window._VERSION}/expanded.svg" />`
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else
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expandImg = html`<img src="/images/${window._VERSION}/collapsed.svg" />`
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}
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return html`
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<div class="node">
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<div class="expand-toggle" onclick=${() => { tree.setNodeExpanded(node, !tree.getNodeExpanded(node.UUID)) }}>${expandImg}</div>
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<div class="name ${selected}" onclick=${() => window._notes2.current.goToNode(node.UUID)}>${node.get('Name')}</div>
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<div class="children ${node.Children.length > 0 && tree.getNodeExpanded(node.UUID) ? 'expanded' : 'collapsed'}">${children}</div>
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</div>`
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}//}}}
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async fetchChildren() {//{{{
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await this.props.node.fetchChildren()
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this.children_populated.value = true
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}//}}}
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}
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class Op {
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constructor(id) {
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this.id = id
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