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import { action, IReactionDisposer, reaction } from "mobx";
import { Dropdown, DropdownSubmenu, MenuItem } from "prosemirror-menu";
import { baseKeymap, lift } from "prosemirror-commands";
import { history, redo, undo } from "prosemirror-history";
import { keymap } from "prosemirror-keymap";
import { EditorState, Transaction, NodeSelection } from "prosemirror-state";
import { EditorView } from "prosemirror-view";
import { schema } from "./RichTextSchema";
import { Schema, NodeType } from "prosemirror-model";
import React = require("react");
import "./TooltipTextMenu.scss";
const { toggleMark, setBlockType, wrapIn } = require("prosemirror-commands");
import { library } from '@fortawesome/fontawesome-svg-core'
import { wrapInList, bulletList, liftListItem, listItem } from 'prosemirror-schema-list'
import {
faListUl,
} from '@fortawesome/free-solid-svg-icons';
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
const SVG = "http://www.w3.org/2000/svg"
//appears above a selection of text in a RichTextBox to give user options such as Bold, Italics, etc.
export class TooltipTextMenu {
private tooltip: HTMLElement;
private num_icons = 0;
constructor(view: EditorView) {
this.tooltip = document.createElement("div");
this.tooltip.className = "tooltipMenu";
//add the div which is the tooltip
view.dom.parentNode!.appendChild(this.tooltip);
//add additional icons
library.add(faListUl);
//add the buttons to the tooltip
let items = [
{ command: toggleMark(schema.marks.strong), dom: this.icon("B", "strong") },
{ command: toggleMark(schema.marks.em), dom: this.icon("i", "em") },
{ command: toggleMark(schema.marks.underline), dom: this.icon("U", "underline") },
{ command: toggleMark(schema.marks.strikethrough), dom: this.icon("S", "strikethrough") },
{ command: toggleMark(schema.marks.superscript), dom: this.icon("s", "superscript") },
{ command: toggleMark(schema.marks.subscript), dom: this.icon("s", "subscript") },
{ command: wrapInList(schema.nodes.bullet_list), dom: this.icon(":", "bullets") },
{ command: toggleMark(schema.marks.timesNewRoman), dom: this.icon("x", "TNR") },
{ command: lift, dom: this.icon("<", "lift") },
]
//add menu items
items.forEach(({ dom, command }) => {
this.tooltip.appendChild(dom);
});
//add dropdowns
//pointer down handler to activate button effects
this.tooltip.addEventListener("pointerdown", e => {
e.preventDefault();
view.focus();
//update view of icons
this.num_icons = 0;
items.forEach(({ command, dom }) => {
if (e.srcElement && dom.contains(e.srcElement as Node)) {
//let active = command(view.state, view.dispatch, view);
let active = command(view.state, view.dispatch, view);
//uncomment this if we want the bullet button to disappear if current selection is bulleted
//dom.style.display = active ? "" : "none";
}
})
})
this.update(view, undefined);
}
// Helper function to create menu icons
icon(text: string, name: string) {
let span = document.createElement("span");
span.className = "menuicon " + name;
span.title = name;
span.textContent = text;
return span;
}
//adapted this method - use it to check if block has a tag (ie bulleting)
blockActive(type: NodeType<Schema<string, string>>, state: EditorState) {
let attrs = {};
if (state.selection instanceof NodeSelection) {
const sel: NodeSelection = state.selection;
let $from = sel.$from;
let to = sel.to;
let node = sel.node;
if (node) {
return node.hasMarkup(type, attrs);
}
return to <= $from.end() && $from.parent.hasMarkup(type, attrs);
}
}
//this doesn't currently work but could be used to use icons for buttons
unorderedListIcon(): HTMLSpanElement {
let span = document.createElement("span");
//let icon = document.createElement("FontAwesomeIcon");
//icon.className = "menuicon";
//icon.style.color = "white";
//span.appendChild(<i style={{ color: "white" }} icon="list-ul" size="lg" />);
let i = document.createElement("i");
i.className = "fa falist-ul";
span.appendChild(i);
//span.appendChild(icon);
//return liftItem.spec.icon.sty
//let sym = document.createElementNS(SVG, "symbol")
// sym.id = name
//sym.style.color = "white";
//width then height
//sym.setAttribute("viewBox", "0 0 " + 1024 + " " + 1024);
//let path = sym.appendChild(document.createElementNS(SVG, "path"));
//path.setAttribute("d", "M219 310v329q0 7-5 12t-12 5q-8 0-13-5l-164-164q-5-5-5-13t5-13l164-164q5-5 13-5 7 0 12 5t5 12zM1024 749v109q0 7-5 12t-12 5h-987q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h987q7 0 12 5t5 12zM1024 530v109q0 7-5 12t-12 5h-621q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h621q7 0 12 5t5 12zM1024 310v109q0 7-5 12t-12 5h-621q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h621q7 0 12 5t5 12zM1024 91v109q0 7-5 12t-12 5h-987q-7 0-12-5t-5-12v-109q0-7 5-12t12-5h987q7 0 12 5t5 12z");
//span.appendChild(sym);
return span;
}
// Create an icon for a heading at the given level
heading(level: number) {
return {
command: setBlockType(schema.nodes.heading, { level }),
dom: this.icon("H" + level, "heading")
}
}
//updates the tooltip menu when the selection changes
update(view: EditorView, lastState: EditorState | undefined) {
let state = view.state
// Don't do anything if the document/selection didn't change
if (lastState && lastState.doc.eq(state.doc) &&
lastState.selection.eq(state.selection)) return
// Hide the tooltip if the selection is empty
if (state.selection.empty) {
this.tooltip.style.display = "none"
return
}
// Otherwise, reposition it and update its content
this.tooltip.style.display = ""
let { from, to } = state.selection
let start = view.coordsAtPos(from), end = view.coordsAtPos(to)
// The box in which the tooltip is positioned, to use as base
let box = this.tooltip.offsetParent!.getBoundingClientRect()
// Find a center-ish x position from the selection endpoints (when
// crossing lines, end may be more to the left)
let left = Math.max((start.left + end.left) / 2, start.left + 3)
this.tooltip.style.left = (left - box.left) + "px"
//let width = Math.abs(start.left - end.left) / 2;
let width = 8 * 16 + 15;
let mid = Math.min(start.left, end.left) + width;
//THIS WIDTH IS 15 * NUMBER OF ICONS + 15
this.tooltip.style.width = width + "px";
this.tooltip.style.bottom = (box.bottom - start.top) + "px";
}
destroy() { this.tooltip.remove() }
}
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