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| 1 | +import { Editor } from "obsidian"; |
| 2 | +import { DiscourseNode } from "~/types"; |
| 3 | +import { createDiscourseNode } from "~/utils/createNode"; |
| 4 | +import type DiscourseGraphPlugin from "~/index"; |
| 5 | + |
| 6 | +/** |
| 7 | + * A popover that shows all node types inline near the cursor/selection. |
| 8 | + * When the user picks a node type, the selected text is transformed into |
| 9 | + * a discourse node and the selection is replaced with a [[link]]. |
| 10 | + */ |
| 11 | +export class InlineNodeTypePicker { |
| 12 | + private popover: HTMLElement | null = null; |
| 13 | + private items: DiscourseNode[] = []; |
| 14 | + private selectedIndex = 0; |
| 15 | + private keydownHandler: ((e: KeyboardEvent) => void) | null = null; |
| 16 | + private clickOutsideHandler: ((e: MouseEvent) => void) | null = null; |
| 17 | + |
| 18 | + constructor( |
| 19 | + private options: { |
| 20 | + editor: Editor; |
| 21 | + nodeTypes: DiscourseNode[]; |
| 22 | + plugin: DiscourseGraphPlugin; |
| 23 | + selectedText: string; |
| 24 | + }, |
| 25 | + ) { |
| 26 | + this.items = this.options.nodeTypes.filter((nt) => nt.name); |
| 27 | + } |
| 28 | + |
| 29 | + private getCursorPosition(): { x: number; y: number } | null { |
| 30 | + try { |
| 31 | + const selection = window.getSelection(); |
| 32 | + if (!selection || selection.rangeCount === 0) return null; |
| 33 | + |
| 34 | + const range = selection.getRangeAt(0); |
| 35 | + const rect = range.getBoundingClientRect(); |
| 36 | + |
| 37 | + if (rect.width === 0 && rect.height === 0) { |
| 38 | + const span = document.createElement("span"); |
| 39 | + span.textContent = "\u200B"; |
| 40 | + range.insertNode(span); |
| 41 | + const spanRect = span.getBoundingClientRect(); |
| 42 | + span.remove(); |
| 43 | + |
| 44 | + if (spanRect.width === 0 && spanRect.height === 0) return null; |
| 45 | + |
| 46 | + return { x: spanRect.left, y: spanRect.bottom }; |
| 47 | + } |
| 48 | + |
| 49 | + return { x: rect.left, y: rect.bottom }; |
| 50 | + } catch { |
| 51 | + return null; |
| 52 | + } |
| 53 | + } |
| 54 | + |
| 55 | + private createPopover(): HTMLElement { |
| 56 | + const popover = document.createElement("div"); |
| 57 | + popover.className = |
| 58 | + "inline-node-type-picker fixed z-[10000] bg-primary border border-modifier-border rounded-md shadow-[0_4px_12px_rgba(0,0,0,0.15)] max-h-[300px] overflow-y-auto min-w-[200px] max-w-[400px]"; |
| 59 | + const itemsContainer = document.createElement("div"); |
| 60 | + itemsContainer.className = "inline-node-type-items-container"; |
| 61 | + popover.appendChild(itemsContainer); |
| 62 | + |
| 63 | + this.renderItems(itemsContainer); |
| 64 | + |
| 65 | + return popover; |
| 66 | + } |
| 67 | + |
| 68 | + private renderItems(container: HTMLElement) { |
| 69 | + container.innerHTML = ""; |
| 70 | + |
| 71 | + if (this.items.length === 0) { |
| 72 | + const noResults = document.createElement("div"); |
| 73 | + noResults.className = "p-3 text-center text-muted text-sm"; |
| 74 | + noResults.textContent = "No node types available"; |
| 75 | + container.appendChild(noResults); |
| 76 | + return; |
| 77 | + } |
| 78 | + |
| 79 | + this.items.forEach((item, index) => { |
| 80 | + const itemEl = document.createElement("div"); |
| 81 | + itemEl.className = `inline-node-type-item px-3 py-2 cursor-pointer flex items-center gap-2 border-b border-[var(--background-modifier-border-hover)]${ |
| 82 | + index === this.selectedIndex ? " bg-modifier-hover" : "" |
| 83 | + }`; |
| 84 | + itemEl.dataset.index = index.toString(); |
| 85 | + |
| 86 | + if (item.color) { |
| 87 | + const colorDot = document.createElement("div"); |
| 88 | + colorDot.className = "w-3 h-3 rounded-full shrink-0"; |
| 89 | + colorDot.style.backgroundColor = item.color; |
| 90 | + itemEl.appendChild(colorDot); |
| 91 | + } |
| 92 | + |
| 93 | + const nameText = document.createElement("div"); |
| 94 | + nameText.textContent = item.name; |
| 95 | + nameText.className = "font-medium text-normal text-sm"; |
| 96 | + itemEl.appendChild(nameText); |
| 97 | + |
| 98 | + itemEl.addEventListener("mousedown", (e) => { |
| 99 | + e.preventDefault(); |
| 100 | + e.stopPropagation(); |
| 101 | + void this.selectItem(item); |
| 102 | + }); |
| 103 | + |
| 104 | + itemEl.addEventListener("mouseenter", () => { |
| 105 | + this.updateSelectedIndex(index); |
| 106 | + }); |
| 107 | + |
| 108 | + container.appendChild(itemEl); |
| 109 | + }); |
| 110 | + } |
| 111 | + |
| 112 | + private updateSelectedIndex(newIndex: number) { |
| 113 | + if (newIndex === this.selectedIndex) return; |
| 114 | + |
| 115 | + const prevSelected = this.popover?.querySelector( |
| 116 | + `.inline-node-type-item[data-index="${this.selectedIndex}"]`, |
| 117 | + ) as HTMLElement; |
| 118 | + if (prevSelected) { |
| 119 | + prevSelected.classList.remove("bg-modifier-hover"); |
| 120 | + } |
| 121 | + |
| 122 | + this.selectedIndex = newIndex; |
| 123 | + |
| 124 | + const newSelected = this.popover?.querySelector( |
| 125 | + `.inline-node-type-item[data-index="${this.selectedIndex}"]`, |
| 126 | + ) as HTMLElement; |
| 127 | + if (newSelected) { |
| 128 | + newSelected.classList.add("bg-modifier-hover"); |
| 129 | + } |
| 130 | + } |
| 131 | + |
| 132 | + private scrollToSelected() { |
| 133 | + const selectedEl = this.popover?.querySelector( |
| 134 | + `.inline-node-type-item[data-index="${this.selectedIndex}"]`, |
| 135 | + ) as HTMLElement; |
| 136 | + if (selectedEl) { |
| 137 | + selectedEl.scrollIntoView({ block: "nearest", behavior: "smooth" }); |
| 138 | + } |
| 139 | + } |
| 140 | + |
| 141 | + private async selectItem(item: DiscourseNode) { |
| 142 | + this.close(); |
| 143 | + await createDiscourseNode({ |
| 144 | + plugin: this.options.plugin, |
| 145 | + nodeType: item, |
| 146 | + text: this.options.selectedText, |
| 147 | + editor: this.options.editor, |
| 148 | + }); |
| 149 | + } |
| 150 | + |
| 151 | + private setupEventHandlers() { |
| 152 | + this.keydownHandler = (e: KeyboardEvent) => { |
| 153 | + if (!this.popover) return; |
| 154 | + |
| 155 | + if (e.key === "ArrowDown") { |
| 156 | + e.preventDefault(); |
| 157 | + e.stopPropagation(); |
| 158 | + if (this.items.length === 0) return; |
| 159 | + const newIndex = Math.min( |
| 160 | + this.selectedIndex + 1, |
| 161 | + this.items.length - 1, |
| 162 | + ); |
| 163 | + this.updateSelectedIndex(newIndex); |
| 164 | + this.scrollToSelected(); |
| 165 | + } else if (e.key === "ArrowUp") { |
| 166 | + e.preventDefault(); |
| 167 | + e.stopPropagation(); |
| 168 | + const newIndex = Math.max(this.selectedIndex - 1, 0); |
| 169 | + this.updateSelectedIndex(newIndex); |
| 170 | + this.scrollToSelected(); |
| 171 | + } else if (e.key === "Enter") { |
| 172 | + e.preventDefault(); |
| 173 | + e.stopPropagation(); |
| 174 | + const selectedItem = this.items[this.selectedIndex]; |
| 175 | + if (selectedItem) { |
| 176 | + void this.selectItem(selectedItem); |
| 177 | + } |
| 178 | + } else if (e.key === "Escape") { |
| 179 | + e.preventDefault(); |
| 180 | + e.stopPropagation(); |
| 181 | + this.close(); |
| 182 | + } |
| 183 | + }; |
| 184 | + |
| 185 | + this.clickOutsideHandler = (e: MouseEvent) => { |
| 186 | + if ( |
| 187 | + this.popover && |
| 188 | + !this.popover.contains(e.target as Node) && |
| 189 | + !(e.target as HTMLElement).closest(".inline-node-type-picker") |
| 190 | + ) { |
| 191 | + this.close(); |
| 192 | + } |
| 193 | + }; |
| 194 | + |
| 195 | + document.addEventListener("keydown", this.keydownHandler, true); |
| 196 | + document.addEventListener("mousedown", this.clickOutsideHandler, true); |
| 197 | + } |
| 198 | + |
| 199 | + private removeEventHandlers() { |
| 200 | + if (this.keydownHandler) { |
| 201 | + document.removeEventListener("keydown", this.keydownHandler, true); |
| 202 | + this.keydownHandler = null; |
| 203 | + } |
| 204 | + if (this.clickOutsideHandler) { |
| 205 | + document.removeEventListener("mousedown", this.clickOutsideHandler, true); |
| 206 | + this.clickOutsideHandler = null; |
| 207 | + } |
| 208 | + } |
| 209 | + |
| 210 | + public open() { |
| 211 | + if (this.popover) { |
| 212 | + this.close(); |
| 213 | + } |
| 214 | + |
| 215 | + const position = this.getCursorPosition(); |
| 216 | + if (!position) return; |
| 217 | + |
| 218 | + this.popover = this.createPopover(); |
| 219 | + document.body.appendChild(this.popover); |
| 220 | + |
| 221 | + const popoverRect = this.popover.getBoundingClientRect(); |
| 222 | + const viewportWidth = window.innerWidth; |
| 223 | + const viewportHeight = window.innerHeight; |
| 224 | + |
| 225 | + let left = position.x; |
| 226 | + let top = position.y + 4; |
| 227 | + |
| 228 | + if (left + popoverRect.width > viewportWidth) { |
| 229 | + left = viewportWidth - popoverRect.width - 10; |
| 230 | + } |
| 231 | + if (left < 10) { |
| 232 | + left = 10; |
| 233 | + } |
| 234 | + |
| 235 | + if (top + popoverRect.height > viewportHeight) { |
| 236 | + top = position.y - popoverRect.height - 4; |
| 237 | + } |
| 238 | + if (top < 10) { |
| 239 | + top = 10; |
| 240 | + } |
| 241 | + |
| 242 | + this.popover.style.left = `${left}px`; |
| 243 | + this.popover.style.top = `${top}px`; |
| 244 | + |
| 245 | + this.setupEventHandlers(); |
| 246 | + } |
| 247 | + |
| 248 | + public close() { |
| 249 | + this.removeEventHandlers(); |
| 250 | + if (this.popover) { |
| 251 | + this.popover.remove(); |
| 252 | + this.popover = null; |
| 253 | + } |
| 254 | + this.selectedIndex = 0; |
| 255 | + } |
| 256 | +} |
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