ngx-editor
Version:
The Rich Text Editor for Angular, Built on ProseMirror
190 lines • 23.9 kB
JavaScript
import { Selection } from 'prosemirror-state';
import { chainCommands, createParagraphNear, liftEmptyBlock, newlineInCode, splitBlock, } from 'prosemirror-commands';
import { DOMParser } from 'prosemirror-model';
import { NgxEditorError } from 'ngx-editor/utils';
import MarkCommand from './commands/Mark';
import ListCommand from './commands/ListItem';
import LinkCommand from './commands/Link';
import HeadingCommand from './commands/Heading';
import ImageCommand from './commands/Image';
import TextColorCommand from './commands/TextColor';
import TextAlignCommand from './commands/TextAlign';
import { isString } from './stringUtil';
const execMark = (name, toggle = false) => {
return (state, dispatch) => {
const command = new MarkCommand(name);
if (!toggle) {
return command.apply()(state, dispatch);
}
return command.toggle()(state, dispatch);
};
};
class EditorCommands {
constructor(view) {
this.applyTrx = (tr) => {
this.state = this.state.apply(tr ?? this.tr);
this.tr = this.state.tr;
this.tr.setMeta('APPLIED_TRX', true);
};
this.dispatch = (tr) => {
this.applyTrx(tr);
};
if (!view) {
throw new NgxEditorError('Required view to initialize commands.');
}
this.view = view;
this.state = view.state;
this.tr = this.view.state.tr;
}
exec() {
// No changes applied
if (!this.tr.getMeta('APPLIED_TRX')) {
return false;
}
const forceEmit = !this.view.state.doc.eq(this.state.doc);
this.view.updateState(this.state);
const tr = this.tr
.setMeta('FORCE_EMIT', forceEmit);
this.view.dispatch(tr);
return true;
}
focus(position = 'end') {
const selection = position === 'start'
? Selection.atStart(this.state.doc)
: Selection.atEnd(this.state.doc);
this.tr.setSelection(selection);
this.applyTrx();
this.view.focus();
return this;
}
scrollIntoView() {
this.tr.scrollIntoView();
this.applyTrx();
return this;
}
insertText(text) {
this.tr.insertText(text);
this.applyTrx();
return this;
}
insertNewLine() {
const newLineCommands = [newlineInCode, createParagraphNear, liftEmptyBlock, splitBlock];
chainCommands(...newLineCommands)(this.state, this.dispatch);
return this;
}
applyMark(name) {
execMark(name, false)(this.state, this.dispatch);
return this;
}
toggleMark(name) {
execMark(name, true)(this.state, this.dispatch);
return this;
}
bold() {
execMark('strong')(this.state, this.dispatch);
return this;
}
toggleBold() {
execMark('strong', true)(this.state, this.dispatch);
return this;
}
italics() {
execMark('em')(this.state, this.dispatch);
return this;
}
toggleItalics() {
execMark('em', true)(this.state, this.dispatch);
return this;
}
underline() {
execMark('u')(this.state, this.dispatch);
return this;
}
toggleUnderline() {
execMark('u', true)(this.state, this.dispatch);
return this;
}
strike() {
execMark('s')(this.state, this.dispatch);
return this;
}
toggleStrike() {
execMark('s', true)(this.state, this.dispatch);
return this;
}
code() {
execMark('code')(this.state, this.dispatch);
return this;
}
toggleCode() {
execMark('code', true)(this.state, this.dispatch);
return this;
}
toggleOrderedList() {
const command = new ListCommand(false);
command.toggle()(this.state, this.dispatch);
return this;
}
toggleBulletList() {
const command = new ListCommand(true);
command.toggle()(this.state, this.dispatch);
return this;
}
toggleHeading(level) {
const command = new HeadingCommand(level);
command.toggle()(this.state, this.dispatch);
return this;
}
insertLink(text, attrs) {
const command = new LinkCommand();
command.insert(text, attrs)(this.state, this.dispatch);
return this;
}
updateLink(attrs) {
const command = new LinkCommand();
command.update(attrs)(this.state, this.dispatch);
return this;
}
insertImage(src, attrs = {}) {
const command = new ImageCommand();
command.insert(src, attrs)(this.state, this.dispatch);
return this;
}
textColor(color) {
const command = new TextColorCommand('text_color');
command.apply({ color })(this.state, this.dispatch);
return this;
}
backgroundColor(color) {
const command = new TextColorCommand('text_background_color');
command.apply({ backgroundColor: color })(this.state, this.dispatch);
return this;
}
removeTextColor() {
const command = new TextColorCommand('text_color');
command.remove()(this.state, this.dispatch);
return this;
}
removeBackgroundColor() {
const command = new TextColorCommand('text_background_color');
command.remove()(this.state, this.dispatch);
return this;
}
align(p) {
const command = new TextAlignCommand(p);
command.toggle()(this.state, this.dispatch);
return this;
}
insertHTML(html) {
const { selection, schema, tr } = this.state;
const { from, to } = selection;
const element = document.createElement('div');
element.innerHTML = isString(html) ? html.trim() : html;
const slice = DOMParser.fromSchema(schema).parseSlice(element);
const transaction = tr.replaceRange(from, to, slice);
this.applyTrx(transaction);
return this;
}
}
export default EditorCommands;
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{ EditorState, Selection, Transaction } from 'prosemirror-state';\nimport { EditorView } from 'prosemirror-view';\nimport {\n  chainCommands, createParagraphNear, liftEmptyBlock,\n  newlineInCode, splitBlock,\n} from 'prosemirror-commands';\nimport { DOMParser } from 'prosemirror-model';\n\nimport { NgxEditorError } from 'ngx-editor/utils';\nimport MarkCommand from './commands/Mark';\nimport ListCommand from './commands/ListItem';\nimport LinkCommand, { LinkAttrs } from './commands/Link';\nimport HeadingCommand, { HeadingLevels } from './commands/Heading';\nimport ImageCommand, { ImageAttrs } from './commands/Image';\nimport TextColorCommand from './commands/TextColor';\nimport TextAlignCommand, { Align } from './commands/TextAlign';\nimport { HTML } from './trustedTypesUtil';\nimport { isString } from './stringUtil';\n\nconst execMark = (name: string, toggle = false) => {\n  return (state: EditorState, dispatch: (tr: Transaction) => void) => {\n    const command = new MarkCommand(name);\n\n    if (!toggle) {\n      return command.apply()(state, dispatch);\n    }\n\n    return command.toggle()(state, dispatch);\n  };\n};\n\ntype FocusPosition = 'start' | 'end';\n\nclass EditorCommands {\n  private view: EditorView;\n  private state: EditorState;\n  private tr: Transaction;\n\n  constructor(view: EditorView) {\n    if (!view) {\n      throw new NgxEditorError('Required view to initialize commands.');\n    }\n\n    this.view = view;\n    this.state = view.state;\n    this.tr = this.view.state.tr;\n  }\n\n  private applyTrx = (tr?: Transaction) => {\n    this.state = this.state.apply(tr ?? this.tr);\n    this.tr = this.state.tr;\n    this.tr.setMeta('APPLIED_TRX', true);\n  };\n\n  private dispatch = (tr: Transaction): void => {\n    this.applyTrx(tr);\n  };\n\n  exec(): boolean {\n    // No changes applied\n    if (!this.tr.getMeta('APPLIED_TRX')) {\n      return false;\n    }\n\n    const forceEmit = !this.view.state.doc.eq(this.state.doc);\n    this.view.updateState(this.state);\n\n    const tr = this.tr\n      .setMeta('FORCE_EMIT', forceEmit);\n\n    this.view.dispatch(tr);\n    return true;\n  }\n\n  focus(position: FocusPosition = 'end'): this {\n    const selection = position === 'start'\n      ? Selection.atStart(this.state.doc)\n      : Selection.atEnd(this.state.doc);\n\n    this.tr.setSelection(selection);\n    this.applyTrx();\n\n    this.view.focus();\n    return this;\n  }\n\n  scrollIntoView(): this {\n    this.tr.scrollIntoView();\n    this.applyTrx();\n    return this;\n  }\n\n  insertText(text: string): this {\n    this.tr.insertText(text);\n    this.applyTrx();\n    return this;\n  }\n\n  insertNewLine(): this {\n    const newLineCommands = [newlineInCode, createParagraphNear, liftEmptyBlock, splitBlock];\n    chainCommands(...newLineCommands)(this.state, this.dispatch);\n    return this;\n  }\n\n  applyMark(name: string): this {\n    execMark(name, false)(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleMark(name: string): this {\n    execMark(name, true)(this.state, this.dispatch);\n    return this;\n  }\n\n  bold(): this {\n    execMark('strong')(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleBold(): this {\n    execMark('strong', true)(this.state, this.dispatch);\n    return this;\n  }\n\n  italics(): this {\n    execMark('em')(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleItalics(): this {\n    execMark('em', true)(this.state, this.dispatch);\n    return this;\n  }\n\n  underline(): this {\n    execMark('u')(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleUnderline(): this {\n    execMark('u', true)(this.state, this.dispatch);\n    return this;\n  }\n\n  strike(): this {\n    execMark('s')(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleStrike(): this {\n    execMark('s', true)(this.state, this.dispatch);\n    return this;\n  }\n\n  code(): this {\n    execMark('code')(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleCode(): this {\n    execMark('code', true)(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleOrderedList(): this {\n    const command = new ListCommand(false);\n    command.toggle()(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleBulletList(): this {\n    const command = new ListCommand(true);\n    command.toggle()(this.state, this.dispatch);\n    return this;\n  }\n\n  toggleHeading(level: HeadingLevels): this {\n    const command = new HeadingCommand(level);\n    command.toggle()(this.state, this.dispatch);\n    return this;\n  }\n\n  insertLink(text: string, attrs: LinkAttrs): this {\n    const command = new LinkCommand();\n    command.insert(text, attrs)(this.state, this.dispatch);\n    return this;\n  }\n\n  updateLink(attrs: LinkAttrs): this {\n    const command = new LinkCommand();\n    command.update(attrs)(this.state, this.dispatch);\n    return this;\n  }\n\n  insertImage(src: string, attrs: ImageAttrs = {}): this {\n    const command = new ImageCommand();\n    command.insert(src, attrs)(this.state, this.dispatch);\n    return this;\n  }\n\n  textColor(color: string): this {\n    const command = new TextColorCommand('text_color');\n    command.apply({ color })(this.state, this.dispatch);\n    return this;\n  }\n\n  backgroundColor(color: string): this {\n    const command = new TextColorCommand('text_background_color');\n    command.apply({ backgroundColor: color })(this.state, this.dispatch);\n    return this;\n  }\n\n  removeTextColor(): this {\n    const command = new TextColorCommand('text_color');\n    command.remove()(this.state, this.dispatch);\n    return this;\n  }\n\n  removeBackgroundColor(): this {\n    const command = new TextColorCommand('text_background_color');\n    command.remove()(this.state, this.dispatch);\n    return this;\n  }\n\n  align(p: Align): this {\n    const command = new TextAlignCommand(p);\n    command.toggle()(this.state, this.dispatch);\n    return this;\n  }\n\n  insertHTML(html: HTML): this {\n    const { selection, schema, tr } = this.state;\n    const { from, to } = selection;\n\n    const element = document.createElement('div');\n    element.innerHTML = isString(html) ? (html as string).trim() : html as any;\n    const slice = DOMParser.fromSchema(schema).parseSlice(element);\n\n    const transaction = tr.replaceRange(from, to, slice);\n    this.applyTrx(transaction);\n\n    return this;\n  }\n}\n\nexport default EditorCommands;\n"]}