153 lines
4.9 KiB
JavaScript
153 lines
4.9 KiB
JavaScript
/* eslint-disable import/prefer-default-export, func-names, space-before-function-paren, wrap-iife, no-var, no-param-reassign, no-cond-assign, quotes, one-var, one-var-declaration-per-line, operator-assignment, no-else-return, prefer-template, prefer-arrow-callback, no-empty, max-len, consistent-return, no-unused-vars, no-return-assign, max-len, vars-on-top */
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const textUtils = {};
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textUtils.selectedText = function(text, textarea) {
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return text.substring(textarea.selectionStart, textarea.selectionEnd);
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};
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textUtils.lineBefore = function(text, textarea) {
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var split;
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split = text.substring(0, textarea.selectionStart).trim().split('\n');
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return split[split.length - 1];
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};
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textUtils.lineAfter = function(text, textarea) {
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return text.substring(textarea.selectionEnd).trim().split('\n')[0];
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};
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textUtils.blockTagText = function(text, textArea, blockTag, selected) {
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var lineAfter, lineBefore;
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lineBefore = this.lineBefore(text, textArea);
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lineAfter = this.lineAfter(text, textArea);
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if (lineBefore === blockTag && lineAfter === blockTag) {
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// To remove the block tag we have to select the line before & after
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if (blockTag != null) {
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textArea.selectionStart = textArea.selectionStart - (blockTag.length + 1);
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textArea.selectionEnd = textArea.selectionEnd + (blockTag.length + 1);
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}
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return selected;
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} else {
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return blockTag + "\n" + selected + "\n" + blockTag;
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}
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};
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textUtils.insertText = function(textArea, text, tag, blockTag, selected, wrap) {
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var insertText, inserted, selectedSplit, startChar, removedLastNewLine, removedFirstNewLine, currentLineEmpty, lastNewLine;
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removedLastNewLine = false;
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removedFirstNewLine = false;
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currentLineEmpty = false;
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// Remove the first newline
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if (selected.indexOf('\n') === 0) {
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removedFirstNewLine = true;
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selected = selected.replace(/\n+/, '');
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}
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// Remove the last newline
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if (textArea.selectionEnd - textArea.selectionStart > selected.replace(/\n$/, '').length) {
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removedLastNewLine = true;
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selected = selected.replace(/\n$/, '');
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}
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selectedSplit = selected.split('\n');
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if (!wrap) {
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lastNewLine = textArea.value.substr(0, textArea.selectionStart).lastIndexOf('\n');
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// Check whether the current line is empty or consists only of spaces(=handle as empty)
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if (/^\s*$/.test(textArea.value.substring(lastNewLine, textArea.selectionStart))) {
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currentLineEmpty = true;
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}
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}
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startChar = !wrap && !currentLineEmpty && textArea.selectionStart > 0 ? '\n' : '';
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if (selectedSplit.length > 1 && (!wrap || (blockTag != null && blockTag !== ''))) {
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if (blockTag != null && blockTag !== '') {
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insertText = this.blockTagText(text, textArea, blockTag, selected);
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} else {
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insertText = selectedSplit.map(function(val) {
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if (val.indexOf(tag) === 0) {
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return "" + (val.replace(tag, ''));
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} else {
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return "" + tag + val;
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}
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}).join('\n');
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}
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} else {
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insertText = "" + startChar + tag + selected + (wrap ? tag : ' ');
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}
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if (removedFirstNewLine) {
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insertText = '\n' + insertText;
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}
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if (removedLastNewLine) {
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insertText += '\n';
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}
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if (document.queryCommandSupported('insertText')) {
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inserted = document.execCommand('insertText', false, insertText);
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}
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if (!inserted) {
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try {
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document.execCommand("ms-beginUndoUnit");
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} catch (error) {}
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textArea.value = this.replaceRange(text, textArea.selectionStart, textArea.selectionEnd, insertText);
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try {
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document.execCommand("ms-endUndoUnit");
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} catch (error) {}
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}
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return this.moveCursor(textArea, tag, wrap, removedLastNewLine);
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};
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textUtils.moveCursor = function(textArea, tag, wrapped, removedLastNewLine) {
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var pos;
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if (!textArea.setSelectionRange) {
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return;
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}
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if (textArea.selectionStart === textArea.selectionEnd) {
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if (wrapped) {
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pos = textArea.selectionStart - tag.length;
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} else {
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pos = textArea.selectionStart;
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}
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if (removedLastNewLine) {
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pos -= 1;
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}
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return textArea.setSelectionRange(pos, pos);
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}
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};
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textUtils.updateText = function(textArea, tag, blockTag, wrap) {
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var $textArea, selected, text;
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$textArea = $(textArea);
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textArea = $textArea.get(0);
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text = $textArea.val();
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selected = this.selectedText(text, textArea);
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$textArea.focus();
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return this.insertText(textArea, text, tag, blockTag, selected, wrap);
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};
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textUtils.init = function(form) {
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var self;
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self = this;
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return $('.js-md', form).off('click').on('click', function() {
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var $this;
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$this = $(this);
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return self.updateText($this.closest('.md-area').find('textarea'), $this.data('md-tag'), $this.data('md-block'), !$this.data('md-prepend'));
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});
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};
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textUtils.removeListeners = function(form) {
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return $('.js-md', form).off('click');
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};
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textUtils.replaceRange = function(s, start, end, substitute) {
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return s.substring(0, start) + substitute + s.substring(end);
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};
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export default textUtils;
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