slate#RangeJSON TypeScript Examples

The following examples show how to use slate#RangeJSON. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: indentation.ts    From grafana-chinese with Apache License 2.0 6 votes vote down vote up 
handleIndent = (editor: CoreEditor, indentDirection: 'left' | 'right') => {
  const curSelection = editor.value.selection;
  const selectedBlocks = editor.value.document.getLeafBlocksAtRange(curSelection).toArray();

  if (indentDirection === 'left') {
    for (const block of selectedBlocks) {
      const blockWhitespace = block.text.length - block.text.trimLeft().length;

      const textKey = block.getFirstText()!.key;

      const rangeProperties: RangeJSON = {
        anchor: {
          key: textKey,
          offset: blockWhitespace,
          path: [],
        },
        focus: {
          key: textKey,
          offset: blockWhitespace,
          path: [],
        },
      };

      editor.deleteBackwardAtRange(SlateRange.create(rangeProperties), Math.min(SLATE_TAB.length, blockWhitespace));
    }
  } else {
    const { startText } = editor.value;
    const textBeforeCaret = startText.text.slice(0, curSelection.start.offset);
    const isWhiteSpace = /^\s*$/.test(textBeforeCaret);

    for (const block of selectedBlocks) {
      editor.insertTextByKey(block.getFirstText()!.key, 0, SLATE_TAB);
    }

    if (isWhiteSpace) {
      editor.moveStartBackward(SLATE_TAB.length);
    }
  }
}