import {DOMUtils, ComposerExtension} from 'nylas-exports'; class TemplatesComposerExtension extends ComposerExtension { static warningsForSending({draft}) { const warnings = []; if (draft.body.search(/]*empty[^>]*>/i) > 0) { warnings.push('with an empty template area'); } return warnings; } static applyTransformsToDraft = ({draft}) => { const nextDraft = draft.clone(); nextDraft.body = nextDraft.body.replace(/<\/?code[^>]*>/g, (match) => `` ); return nextDraft; } static unapplyTransformsToDraft = ({draft}) => { const nextDraft = draft.clone(); nextDraft.body = nextDraft.body.replace(//g, (match, node) => node ); return nextDraft; } static onClick({editor, event}) { const node = event.target; if (node.nodeName === 'CODE' && node.classList.contains('var') && node.classList.contains('empty')) { editor.selectAllChildren(node); } } static onKeyDown({editor, event}) { const editableNode = editor.rootNode; if (event.key === 'Tab') { const nodes = editableNode.querySelectorAll('code.var'); if (nodes.length > 0) { const sel = editor.currentSelection(); let found = false; // First, try to find a that the selection is within. If found, // select the next/prev node if the selection ends at the end of the // 's text, otherwise select the 's contents. for (let i = 0; i < nodes.length; i++) { const node = nodes[i]; if (DOMUtils.selectionIsWithin(node)) { const selIndex = editor.getSelectionTextIndex(node); const length = DOMUtils.getIndexedTextContent(node).slice(-1)[0].end; let nextIndex = i; if (selIndex.endIndex === length) { nextIndex = event.shiftKey ? i - 1 : i + 1; } nextIndex = (nextIndex + nodes.length) % nodes.length; // allow wraparound in both directions sel.selectAllChildren(nodes[nextIndex]); found = true; break; } } // If we failed to find a that the selection is within, select the // nearest before/after the selection (depending on shift). if (!found) { const treeWalker = document.createTreeWalker(editableNode, NodeFilter.SHOW_ELEMENT + NodeFilter.SHOW_TEXT); let curIndex = 0; let nextIndex = null; let node = treeWalker.nextNode(); while (node) { if (sel.anchorNode === node || sel.focusNode === node) break; if (node.nodeName === 'CODE' && node.classList.contains('var')) curIndex++; node = treeWalker.nextNode(); } nextIndex = event.shiftKey ? curIndex - 1 : curIndex; nextIndex = (nextIndex + nodes.length) % nodes.length; // allow wraparound in both directions sel.selectAllChildren(nodes[nextIndex]); } event.preventDefault(); event.stopPropagation(); } } else if (event.key === 'Enter') { const nodes = editableNode.querySelectorAll('code.var'); for (let i = 0; i < nodes.length; i++) { if (DOMUtils.selectionStartsOrEndsIn(nodes[i])) { event.preventDefault(); event.stopPropagation(); break; } } } } static onContentChanged({editor}) { const editableNode = editor.rootNode; const selection = editor.currentSelection().rawSelection; const isWithinNode = (node) => { let test = selection.baseNode; while (test !== editableNode) { if (test === node) { return true; } test = test.parentNode; } return false; }; const codeTags = editableNode.querySelectorAll('code.var.empty'); for (let i = 0, codeTag; i < codeTags.length; i++) { codeTag = codeTags[i]; // sets node contents to just its textContent, strips HTML codeTag.textContent = codeTag.textContent; if (selection.containsNode(codeTag) || isWithinNode(codeTag)) { codeTag.classList.remove('empty'); } } } } module.exports = TemplatesComposerExtension;