40 lines
1020 B
JavaScript
40 lines
1020 B
JavaScript
// @flow
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export default function KeyboardShortcuts() {
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return {
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/**
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* On key down, check for our specific key shortcuts.
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*
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* @param {Event} e
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* @param {Data} data
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* @param {State} state
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* @return {State or Null} state
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*/
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onKeyDown(ev: SyntheticEvent, data: Object, state: Object) {
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if (!data.isMeta) return null;
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switch (data.key) {
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case 'b':
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return this.toggleMark(state, 'bold');
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case 'i':
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return this.toggleMark(state, 'italic');
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case 'u':
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return this.toggleMark(state, 'underlined');
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case 'd':
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return this.toggleMark(state, 'deleted');
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default:
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return null;
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}
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},
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toggleMark(state: Object, type: string) {
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// don't allow formatting of document title
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const firstNode = state.document.nodes.first();
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if (firstNode === state.startBlock) return;
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state = state.transform().toggleMark(type).apply();
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return state;
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},
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};
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}
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