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index.ts
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index.ts
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import {Constants} from "../constants";
import {isCtrl, isFirefox} from "../util/compatibility";
import {blurEvent, dropEvent, focusEvent, hotkeyEvent, scrollCenter, selectEvent} from "../util/editorCommonEvent";
import {paste} from "../util/fixBrowserBehavior";
import {hasClosestByClassName} from "../util/hasClosest";
import {
getEditorRange, setRangeByWbr,
setSelectionFocus,
} from "../util/selection";
import {expandMarker} from "./expandMarker";
import {highlightToolbarIR} from "./highlightToolbarIR";
import {input} from "./input";
import {processAfterRender, processHint} from "./process";
class IR {
public element: HTMLPreElement;
public processTimeoutId: number;
public hlToolbarTimeoutId: number;
public composingLock: boolean = false;
public preventInput: boolean;
constructor(vditor: IVditor) {
const divElement = document.createElement("div");
divElement.className = "vditor-ir";
divElement.innerHTML = `<pre class="vditor-reset" placeholder="${vditor.options.placeholder}"
contenteditable="true" spellcheck="false"></pre>`;
this.element = divElement.firstElementChild as HTMLPreElement;
this.bindEvent(vditor);
focusEvent(vditor, this.element);
blurEvent(vditor, this.element);
hotkeyEvent(vditor, this.element);
selectEvent(vditor, this.element);
dropEvent(vditor, this.element);
}
private bindEvent(vditor: IVditor) {
this.element.addEventListener("copy", (event: ClipboardEvent & { target: HTMLElement }) => {
const range = getSelection().getRangeAt(0);
if (range.toString() === "") {
return;
}
event.stopPropagation();
event.preventDefault();
const tempElement = document.createElement("div");
tempElement.appendChild(range.cloneContents());
event.clipboardData.setData("text/plain", vditor.lute.VditorIRDOM2Md(tempElement.innerHTML).trim());
event.clipboardData.setData("text/html", "");
});
this.element.addEventListener("paste", (event: ClipboardEvent & { target: HTMLElement }) => {
paste(vditor, event, {
pasteCode: (code: string) => {
document.execCommand("insertHTML", false, code);
},
});
});
this.element.addEventListener("compositionstart", (event: InputEvent) => {
this.composingLock = true;
});
this.element.addEventListener("compositionend", (event: InputEvent) => {
if (!isFirefox()) {
input(vditor, getSelection().getRangeAt(0).cloneRange());
}
this.composingLock = false;
});
this.element.addEventListener("input", (event: InputEvent) => {
if (this.preventInput) {
this.preventInput = false;
return;
}
if (this.composingLock) {
return;
}
input(vditor, getSelection().getRangeAt(0).cloneRange());
});
this.element.addEventListener("click", (event: MouseEvent & { target: HTMLInputElement }) => {
if (event.target.tagName === "INPUT") {
if (event.target.checked) {
event.target.setAttribute("checked", "checked");
} else {
event.target.removeAttribute("checked");
}
this.preventInput = true;
processAfterRender(vditor);
return;
}
const range = getEditorRange(this.element);
if (event.target.isEqualNode(this.element) && this.element.lastElementChild && range.collapsed) {
const lastRect = this.element.lastElementChild.getBoundingClientRect();
if (event.y > lastRect.top + lastRect.height) {
if (this.element.lastElementChild.tagName === "P") {
range.selectNodeContents(this.element.lastElementChild);
range.collapse(false);
} else {
this.element.insertAdjacentHTML("beforeend",
`<p data-block="0">${Constants.ZWSP}<wbr></p>`);
setRangeByWbr(this.element, range);
}
return;
}
}
// 点击后光标落于预览区
let previewElement = hasClosestByClassName(event.target, "vditor-ir__preview");
if (!previewElement) {
previewElement = hasClosestByClassName(
range.startContainer, "vditor-ir__preview");
}
if (previewElement) {
if (previewElement.previousElementSibling.firstElementChild) {
range.selectNodeContents(previewElement.previousElementSibling.firstElementChild);
} else {
// 行内数学公式
range.selectNodeContents(previewElement.previousElementSibling);
}
range.collapse(true);
setSelectionFocus(range);
scrollCenter(vditor);
}
// 点击图片光标选中图片地址
if (event.target.tagName === "IMG") {
const linkElement =
event.target.parentElement.querySelector<HTMLSpanElement>(".vditor-ir__marker--link");
if (linkElement) {
range.selectNode(linkElement);
setSelectionFocus(range);
}
}
expandMarker(range, vditor);
highlightToolbarIR(vditor);
});
this.element.addEventListener("keyup", (event) => {
if (event.isComposing || isCtrl(event)) {
return;
}
if (event.key === "Enter") {
scrollCenter(vditor);
}
highlightToolbarIR(vditor);
if ((event.key === "Backspace" || event.key === "Delete") &&
vditor.ir.element.innerHTML !== "" && vditor.ir.element.childNodes.length === 1 &&
vditor.ir.element.firstElementChild && vditor.ir.element.firstElementChild.tagName === "P"
&& vditor.ir.element.firstElementChild.childElementCount === 0
&& (vditor.ir.element.textContent === "" || vditor.ir.element.textContent === "\n")) {
// 为空时显示 placeholder
vditor.ir.element.innerHTML = "";
return;
}
const range = getEditorRange(this.element);
if (event.key === "Backspace") {
// firefox headings https://github.com/Vanessa219/vditor/issues/211
if (isFirefox() && range.startContainer.textContent === "\n" && range.startOffset === 1) {
range.startContainer.textContent = "";
expandMarker(range, vditor);
}
// 数学公式前是空块,空块前是 table,在空块前删除,数学公式会多一个 br
this.element.querySelectorAll(".language-math").forEach((item) => {
const brElement = item.querySelector("br");
if (brElement) {
brElement.remove();
}
});
} else if (event.key.indexOf("Arrow") > -1) {
if (event.key === "ArrowLeft" || event.key === "ArrowRight") {
processHint(vditor);
}
expandMarker(range, vditor);
} else if (event.keyCode === 229 && event.code === "" && event.key === "Unidentified") {
// https://github.com/Vanessa219/vditor/issues/508 IR 删除到节点需展开
expandMarker(range, vditor);
}
const previewRenderElement = hasClosestByClassName(range.startContainer, "vditor-ir__preview");
if (previewRenderElement) {
if (event.key === "ArrowUp" || event.key === "ArrowLeft") {
if (previewRenderElement.previousElementSibling.firstElementChild) {
range.selectNodeContents(previewRenderElement.previousElementSibling.firstElementChild);
} else {
// 行内数学公式
range.selectNodeContents(previewRenderElement.previousElementSibling);
}
range.collapse(false);
event.preventDefault();
return true;
}
// 行内数学公式
if (previewRenderElement.tagName === "SPAN" &&
(event.key === "ArrowDown" || event.key === "ArrowRight")) {
range.selectNodeContents(previewRenderElement.parentElement.lastElementChild);
range.collapse(false);
event.preventDefault();
return true;
}
}
});
}
}
export {IR};