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Diffstat (limited to 'src/client/util/prosemirrorPatches.js')
| -rw-r--r-- | src/client/util/prosemirrorPatches.js | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/client/util/prosemirrorPatches.js b/src/client/util/prosemirrorPatches.js new file mode 100644 index 000000000..269423482 --- /dev/null +++ b/src/client/util/prosemirrorPatches.js @@ -0,0 +1,139 @@ +'use strict'; + +Object.defineProperty(exports, '__esModule', { value: true }); + +var prosemirrorInputRules = require('prosemirror-inputrules'); +var prosemirrorTransform = require('prosemirror-transform'); +var prosemirrorModel = require('prosemirror-model'); + +exports.liftListItem = liftListItem; +exports.sinkListItem = sinkListItem; +exports.wrappingInputRule = wrappingInputRule; +// :: (NodeType) → (state: EditorState, dispatch: ?(tr: Transaction)) → bool +// Create a command to lift the list item around the selection up into +// a wrapping list. +function liftListItem(itemType) { + return function (tx, dispatch) { + var ref = tx.selection; + var $from = ref.$from; + var $to = ref.$to; + var range = $from.blockRange($to, function (node) { return node.childCount && node.firstChild.type == itemType; }); + if (!range) { return false } + if (!dispatch) { return true } + if ($from.node(range.depth - 1).type == itemType) // Inside a parent list + { return liftToOuterList(tx, dispatch, itemType, range) } + else // Outer list node + { return liftOutOfList(tx, dispatch, range) } + } +} + +function liftToOuterList(tr, dispatch, itemType, range) { + var end = range.end, endOfList = range.$to.end(range.depth); + if (end < endOfList) { + // There are siblings after the lifted items, which must become + // children of the last item + tr.step(new prosemirrorTransform.ReplaceAroundStep(end - 1, endOfList, end, endOfList, + new prosemirrorModel.Slice(prosemirrorModel.Fragment.from(itemType.create(null, range.parent.copy())), 1, 0), 1, true)); + range = new prosemirrorModel.NodeRange(tr.doc.resolve(range.$from.pos), tr.doc.resolve(endOfList), range.depth); + } + dispatch(tr.lift(range, prosemirrorTransform.liftTarget(range)).scrollIntoView()); + return true +} + +function liftOutOfList(tr, dispatch, range) { + var list = range.parent; + // Merge the list items into a single big item + for (var pos = range.end, i = range.endIndex - 1, e = range.startIndex; i > e; i--) { + pos -= list.child(i).nodeSize; + tr.delete(pos - 1, pos + 1); + } + var $start = tr.doc.resolve(range.start), item = $start.nodeAfter; + var atStart = range.startIndex == 0, atEnd = range.endIndex == list.childCount; + var parent = $start.node(-1), indexBefore = $start.index(-1); + if (!parent.canReplace(indexBefore + (atStart ? 0 : 1), indexBefore + 1, + item.content.append(atEnd ? prosemirrorModel.Fragment.empty : prosemirrorModel.Fragment.from(list)))) { return false } + var start = $start.pos, end = start + item.nodeSize; + // Strip off the surrounding list. At the sides where we're not at + // the end of the list, the existing list is closed. At sides where + // this is the end, it is overwritten to its end. + tr.step(new prosemirrorTransform.ReplaceAroundStep(start - (atStart ? 1 : 0), end + (atEnd ? 1 : 0), start + 1, end - 1, + new prosemirrorModel.Slice((atStart ? prosemirrorModel.Fragment.empty : prosemirrorModel.Fragment.from(list.copy(prosemirrorModel.Fragment.empty))) + .append(atEnd ? prosemirrorModel.Fragment.empty : prosemirrorModel.Fragment.from(list.copy(prosemirrorModel.Fragment.empty))), + atStart ? 0 : 1, atEnd ? 0 : 1), atStart ? 0 : 1)); + dispatch(tr.scrollIntoView()); + return true +} + +// :: (NodeType) → (state: EditorState, dispatch: ?(tr: Transaction)) → bool +// Create a command to sink the list item around the selection down +// into an inner list. +function sinkListItem(itemType) { + return function (state, dispatch) { + var ref = state.selection; + var $from = ref.$from; + var $to = ref.$to; + var range = $from.blockRange($to, function (node) { return node.childCount && node.firstChild.type == itemType; }); + if (!range) { return false } + var startIndex = range.startIndex; + if (startIndex == 0) { return false } + var parent = range.parent, nodeBefore = parent.child(startIndex - 1); + if (nodeBefore.type != itemType) { return false; } + + if (dispatch) { + var nestedBefore = nodeBefore.lastChild && nodeBefore.lastChild.type == parent.type; + var inner = prosemirrorModel.Fragment.from(nestedBefore ? itemType.create() : null); + let slice = new prosemirrorModel.Slice(prosemirrorModel.Fragment.from(itemType.create(null, prosemirrorModel.Fragment.from(parent.type.create({ ...parent.attrs, fontSize: parent.attrs.fontSize ? parent.attrs.fontSize - 4 : undefined }, inner)))), + nestedBefore ? 3 : 1, 0); + var before = range.start, after = range.end; + dispatch(state.tr.step(new prosemirrorTransform.ReplaceAroundStep(before - (nestedBefore ? 3 : 1), after, + before, after, slice, 1, true)) + .scrollIntoView()); + } + return true + } +} + +function findWrappingOutside(range, type) { + var parent = range.parent; + var startIndex = range.startIndex; + var endIndex = range.endIndex; + var around = parent.contentMatchAt(startIndex).findWrapping(type); + if (!around) { return null } + var outer = around.length ? around[0] : type; + return parent.canReplaceWith(startIndex, endIndex, outer) ? around : null +} + +function findWrappingInside(range, type) { + var parent = range.parent; + var startIndex = range.startIndex; + var endIndex = range.endIndex; + var inner = parent.child(startIndex); + var inside = type.contentMatch.findWrapping(inner.type); + if (!inside) { return null } + var lastType = inside.length ? inside[inside.length - 1] : type; + var innerMatch = lastType.contentMatch; + for (var i = startIndex; innerMatch && i < endIndex; i++) { innerMatch = innerMatch.matchType(parent.child(i).type); } + if (!innerMatch || !innerMatch.validEnd) { return null } + return inside +} +function findWrapping(range, nodeType, attrs, innerRange, customWithAttrs = null) { + if (innerRange === void 0) innerRange = range; + let withAttrs = (type) => ({ type: type, attrs: null }); + var around = findWrappingOutside(range, nodeType); + var inner = around && findWrappingInside(innerRange, nodeType); + if (!inner) { return null } + return around.map(withAttrs).concat({ type: nodeType, attrs: attrs }).concat(inner.map(customWithAttrs ? customWithAttrs : withAttrs)) +} +function wrappingInputRule(regexp, nodeType, getAttrs, joinPredicate, customWithAttrs = null) { + return new prosemirrorInputRules.InputRule(regexp, function (state, match, start, end) { + var attrs = getAttrs instanceof Function ? getAttrs(match) : getAttrs; + var tr = state.tr.delete(start, end); + var $start = tr.doc.resolve(start), range = $start.blockRange(), wrapping = range && findWrapping(range, nodeType, attrs, undefined, customWithAttrs); + if (!wrapping) { return null } + tr.wrap(range, wrapping); + var before = tr.doc.resolve(start - 1).nodeBefore; + if (before && before.type == nodeType && prosemirrorTransform.canJoin(tr.doc, start - 1) && + (!joinPredicate || joinPredicate(match, before))) { tr.join(start - 1); } + return tr + }) +}
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