X-Git-Url: https://git.mdrn.pl/fnpeditor.git/blobdiff_plain/13e0905b3f1950510b0bb5621e74d888650cbff1..567b5d347d2df4f0aea88996a78cb4b457802126:/src/editor/modules/documentCanvas/canvas/keyboard.js diff --git a/src/editor/modules/documentCanvas/canvas/keyboard.js b/src/editor/modules/documentCanvas/canvas/keyboard.js index cd12a02..924a880 100644 --- a/src/editor/modules/documentCanvas/canvas/keyboard.js +++ b/src/editor/modules/documentCanvas/canvas/keyboard.js @@ -1,10 +1,10 @@ define([ -'modules/documentCanvas/canvas/documentElement', +'libs/jquery', 'modules/documentCanvas/canvas/utils' -], function(documentElement, utils) { +], function($, utils) { 'use strict'; - +/* globals gettext */ var KEYS = { ENTER: 13, @@ -17,232 +17,432 @@ var KEYS = { X: 88 }; -var handleKey = function(event, canvas) { - handlers.some(function(handler) { - if(handles(handler, event) && handler[event.type]) { - handler[event.type](event, canvas); - return true; - } - }); -}; - -var handles = function(handler, event) { - if(handler.key === event.which) { - return true; +var scroll = function(place, textElement) { + var rect = textElement.getBoundingClientRect(), + scroll = $('#rng-module-documentCanvas-contentWrapper'), + border = rect.bottom - (place === 'top' ? rect.height : 0) - scroll.offset().top + scroll[0].scrollTop, + visible = scroll[0].scrollTop + {top: 0, bottom: scroll.height()}[place], + padding = 16, + toScroll = 0; + + if(place === 'top' && (border - padding < visible)) { + toScroll = border - visible - padding; + } else if(place === 'bottom' && (border + padding > visible)) { + toScroll = border - visible + padding; } - if(handler.keys && handler.keys.indexOf(event.which) !== -1) { - return true; + if(toScroll) { + scroll[0].scrollTop = scroll[0].scrollTop + toScroll; } - return false; + return toScroll; }; -var handlers = []; +var getLastRectAbove = function(node, y) { + var rects = node.getClientRects(), + idx = 0, + rect, toret; + while((rect = rects[idx])) { + if(rect.bottom < y) { + toret = rect; + } else { + break; + } + idx++; + } + return toret; +}; +var getFirstRectBelow = function(node, y) { + var rects = node.getClientRects(), + idx = 0, + rect, toret; + while((rect = rects[idx])) { + if(rect.top > y) { + toret = rect; + break; + } + idx++; + } + return toret; +}; -handlers.push({key: KEYS.ENTER, - keydown: function(event, canvas) { - event.preventDefault(); - var cursor = canvas.getCursor(), - position = cursor.getPosition(), - element = position.element, - added; +var handleKeyEvent = function(e, s) { + keyEventHandlers.some(function(handler) { + if(handler.applies(e, s)) { + handler.run(e, s); + return true; + } + }); +}; +// todo: whileRemoveWholetext +var keyEventHandlers = [ + { // ctrl+x - prevented (?) + applies: function(e, s) { + return e.ctrlKey && + e.key === KEYS.X && + s.type === 'textSelection' && + s.startsAtBeginning() && + s.endsAtEnd(); + }, + run: function(e,s) { + void(s); + e.preventDefault(); + } + }, + { + applies: function(e, s) { + return e.key === KEYS.ARROW_UP && s.type === 'caret'; + }, + run: function(e, s) { + /* globals window */ + var caretRect = window.getSelection().getRangeAt(0).getClientRects()[0], + frameRects = s.element.dom[0].getClientRects(), + caretTop = caretRect.bottom - caretRect.height, + position, target,rect, scrolled; - if(Object.keys(cursor.getPosition()).length === 0) { - var currentElement = canvas.getCurrentNodeElement(); - if(currentElement) { - canvas.wlxmlDocument.startTransaction(); - added = currentElement.data('wlxmlNode').after({ - tagName: currentElement.getWlxmlTag() || 'div', - attrs: {'class': currentElement.getWlxmlClass() || 'p'} + + if((frameRects[0].bottom === caretRect.bottom) || (caretRect.left < frameRects[0].left)) { + e.preventDefault(); + s.canvas.rootWrapper.find('[document-text-element]').each(function() { + var test = getLastRectAbove(this, caretTop); + if(test) { + target = this; + rect = test; + } else { + return false; + } }); - added.append({text:''}); - canvas.wlxmlDocument.endTransaction(); - canvas.setCurrentElement(utils.findCanvasElement(added), {caretTo: 'start'}); + if(target) { + scrolled = scroll('top', target); + position = utils.caretPositionFromPoint(caretRect.left, rect.bottom - 1 - scrolled); + s.canvas.setCurrentElement(s.canvas.getDocumentElement(position.textNode), {caretTo: position.offset}); + } + } + if(target) { + scrolled = scroll('top', target); + var left = caretRect.left; + if(left > rect.left + rect.width) { + left = rect.left + rect.width; + } else if(left < rect.left ) { + left = rect.left; + } + position = utils.caretPositionFromPoint(left, rect.bottom - 1 - scrolled); + s.canvas.setCurrentElement(s.canvas.getDocumentElement(position.textNode), {caretTo: position.offset}); } - return; } + }, + { + applies: function(e, s) { + return e.key === KEYS.ARROW_DOWN && s.type === 'caret'; + }, + run: function(e, s) { + /* globals window */ + var caretRect = window.getSelection().getRangeAt(0).getClientRects()[0], + frameRects = s.element.dom[0].getClientRects(), + lastRect = frameRects[frameRects.length-1], + position, target,rect, scrolled; - if(!cursor.isSelecting()) { - if(event.ctrlKey) { - if(element instanceof documentElement.DocumentTextElement) { - element = element.parent(); + if(lastRect.bottom === caretRect.bottom || (caretRect.left > lastRect.left + lastRect.width)) { + e.preventDefault(); + s.canvas.rootWrapper.find('[document-text-element]').each(function() { + var test = getFirstRectBelow(this, caretRect.bottom); + if(test) { + target = this; + rect = test; + return false; + } + }); + if(target) { + scrolled = scroll('bottom', target); + position = utils.caretPositionFromPoint(caretRect.left, rect.top +1 - scrolled); + s.canvas.setCurrentElement(s.canvas.getDocumentElement(position.textNode), {caretTo: position.offset}); } - - canvas.wlxmlDocument.startTransaction(); - added = element.data('wlxmlNode').after( - {tagName: element.getWlxmlTag() || 'div', attrs: {'class': element.getWlxmlClass() || 'p'}} - ); - added.append({text: ''}); - canvas.wlxmlDocument.endTransaction(); - canvas.setCurrentElement(utils.findCanvasElement(added), {caretTo: 'start'}); - - } else { - - if(!(element.parent().parent())) { - return false; // top level element is unsplittable + } + if(target) { + scrolled = scroll('bottom', target); + var left = caretRect.left; + if(left > rect.left + rect.width) { + left = rect.left + rect.width; + } else if(left < rect.left ) { + left = rect.left; } + position = utils.caretPositionFromPoint(left, rect.top +1 - scrolled); + s.canvas.setCurrentElement(s.canvas.getDocumentElement(position.textNode), {caretTo: position.offset}); + } + } + }, + { + applies: function(e, s) { + return e.key === KEYS.ARROW_LEFT && s.type === 'caret'; + }, + run: function(e, s) { + /* globals window */ + var prev; - //var nodes = position.element.data('wlxmlNode').split({offset: position.offset}), - // var nodes = position.element.data('wlxmlNode').transform('split', {offset: position.offset}), - // newEmpty, - // goto, - // gotoOptions; - - // if(position.offsetAtBeginning) - // newEmpty = nodes.first; - // else if(position.offsetAtEnd) - // newEmpty = nodes.second; - - // if(newEmpty) { - // //goto = newEmpty.append({text: ''}); - // gotoOptions = {}; - // } else { - // goto = nodes.second; - // gotoOptions = {caretTo: 'start'}; - // } - - var result = position.element.data('wlxmlNode').breakContent({offset: position.offset}), - goto, gotoOptions; - if(result.emptyText) { - goto = result.emptyText; - gotoOptions = {}; - } else { - goto = result.second; - gotoOptions = {caretTo: 'start'}; + if(s.offset === 0) { + e.preventDefault(); + prev = s.canvas.getPreviousTextElement(s.element); + if(prev) { + scroll('top', prev.dom[0]); + s.canvas.setCurrentElement(s.canvas.getDocumentElement(prev.dom.contents()[0]), {caretTo: 'end'}); } - - canvas.setCurrentElement(utils.findCanvasElement(goto), gotoOptions); } } - } -}); - -handlers.push({keys: [KEYS.ARROW_UP, KEYS.ARROW_DOWN, KEYS.ARROW_LEFT, KEYS.ARROW_RIGHT], - keydown: function(event, canvas) { - var position = canvas.getCursor().getPosition(), - element = position.element; - if(element && (element instanceof documentElement.DocumentTextElement) && element.isEmpty()) { - var direction, caretTo; - if(event.which === KEYS.ARROW_LEFT || event.which === KEYS.ARROW_UP) { - direction = 'above'; - caretTo = 'end'; + }, + { + applies: function(e, s) { + return e.key === KEYS.ARROW_RIGHT && s.type === 'caret'; + }, + run: function(e, s) { + /* globals window */ + var next; + if(s.isAtEnd()) { + e.preventDefault(); + next = s.canvas.getNextTextElement(s.element); + if(next) { + scroll('bottom', next.dom[0]); + s.canvas.setCurrentElement(s.canvas.getDocumentElement(next.dom.contents()[0]), {caretTo: 0}); + } } else { - direction = 'below'; - caretTo = 'start'; + var secondToLast = (s.offset === s.element.wlxmlNode.getText().length -1); + if(secondToLast) { + // Only Flying Spaghetti Monster knows why this is need for FF (for versions at least 26 to 31) + e.preventDefault(); + s.canvas.setCurrentElement(s.element, {caretTo: 'end'}); + } } - var el = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0])); - canvas.setCurrentElement(el, {caretTo: caretTo}); } }, - keyup: function(event, canvas) { - var element = canvas.getCursor().getPosition().element, - caretTo = false; - if(!element) { - // Chrome hack - - var moves = [{direction: 'above', caretTo: 'end'}, {direction: 'below', caretTo: 'start'}]; - if(event.which === KEYS.ARROW_RIGHT || event.which === KEYS.ARROW_DOWN) { - moves.reverse(); - } - moves.some(function(move) { - /* globals window */ - var targetNode = utils.nearestInDocumentOrder('[document-text-element]:visible', move.direction, window.getSelection().focusNode); - if(targetNode) { - element = canvas.getDocumentElement(targetNode); - caretTo = move.caretTo; - return true; // break - } - }); - } - if(element) { - canvas.setCurrentElement(element, {caretTo: caretTo}); + { // backspace removing the last character in a span + applies: function(e, s) { + return s.type === 'caret' && + s.element.wlxmlNode.parent().is({tagName: 'span'}) && + s.element.wlxmlNode.getText().length === 1 && + s.offset === 1 && + (e.key === KEYS.BACKSPACE); + }, + run: function(e, s) { + var params = {}, + prevTextNode = s.element.canvas.getPreviousTextElement(s.element).wlxmlNode; + e.preventDefault(); + s.element.wlxmlNode.parent().detach(params); + s.canvas.setCurrentElement( + (params.ret && params.ret.mergedTo) || prevTextNode, + {caretTo: params.ret ? params.ret.previousLen : (prevTextNode ? prevTextNode.getText().length : 0)}); } - } -}); + }, + { // backspace/delete through an edge (behaves weirdly at spans) + applies: function(e, s) { + return s.type === 'caret' && ( + (s.isAtBeginning() && e.key === KEYS.BACKSPACE) || + (s.isAtEnd() && e.key === KEYS.DELETE) + ); + }, + run: function(e,s) { + var goto, element; + + if(e.key === KEYS.BACKSPACE) { + element = s.element; + } + else { + element = s.canvas.getNearestTextElement('below', s.element); + } + e.preventDefault(); -var selectsWholeTextElement = function(cursor) { - if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd) { - return true; - } - return false; -}; + if(!element) { + return; + } -handlers.push({key: KEYS.X, - keydown: function(event, canvas) { - if(event.ctrlKey && selectsWholeTextElement(canvas.getCursor())) { - event.preventDefault(); - } - } -}); - -handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE], - keydown: function(event, canvas) { - var cursor = canvas.getCursor(), - position = canvas.getCursor().getPosition(), - element = position.element, - node = element.data('wlxmlNode'); - - if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) { - event.preventDefault(); - return; - } - - var cursorAtOperationEdge = position.offsetAtBeginning; - if(event.which === KEYS.DELETE) { - cursorAtOperationEdge = position.offsetAtEnd; - } + var parent = element.wlxmlNode.parent(); + if(element.wlxmlNode.getIndex() === 0 && parent.isContextRoot() && (!parent.is('item') || parent.getIndex() === 0)) { + // Don't even try to do anything at the edge of a context root, except for non-first items + // - this is a temporary solution until key events handling get refactored into something more sane. + return; + } - var willDeleteWholeText = function() { - return element.getText().length === 1 || selectsWholeTextElement(cursor); - }; + s.canvas.wlxmlDocument.transaction(function() { + if(element.wlxmlNode.getIndex() === 0) { + goto = element.wlxmlNode.parent().moveUp(); + } else { + goto = element.wlxmlNode.moveUp(); + } + if(goto) { + s.canvas.setCurrentElement(goto.node, {caretTo: goto.offset}); + } + }, { + metadata: { + description: gettext('Remove text') + } + }); + } + }, - canvas.wlxmlDocument.startTransaction(); - - if(willDeleteWholeText()) { - event.preventDefault(); - node.setText(''); + { // backspace/delete last character in a node - why is it needed? + applies: function(e,s) { + return s.type === 'caret' && s.element.getText().length === 1 && (e.key === KEYS.BACKSPACE || e.key === KEYS.DELETE); + }, + run: function(e,s) { + e.preventDefault(); + s.element.wlxmlNode.setText(''); + s.canvas.setCurrentElement(s.element, {caretTo: 0}); } - else if(element.isEmpty()) { + }, + { + applies: function(e, s) { + return s.type === 'textSelection' && (e.key === KEYS.BACKSPACE || e.key === KEYS.DELETE); + }, + run: function(e, s) { var direction = 'above', - caretTo = 'end'; - - if(event.which === KEYS.DELETE) { + caretTo = 'end', + goto; + + if(e.key === KEYS.DELETE) { direction = 'below'; caretTo = 'start'; } - event.preventDefault(); + e.preventDefault(); - var parent = element.parent(), - grandParent = parent ? parent.parent() : null, - goto; - if(parent.children().length === 1 && parent.children()[0].sameNode(element)) { - if(grandParent && grandParent.children().length === 1) { - goto = grandParent.data('wlxmlNode').append({text: ''}); + if(s.startsAtBeginning && s.endsAtEnd && s.startElement.sameNode(s.endElement)) { + goto = s.startElement; + caretTo = s.startOffset; + } else if(direction === 'above') { + if(s.startsAtBeginning()) { + goto = s.canvas.getNearestTextElement('above', s.startElement); + caretTo = 'end'; } else { - goto = element.getNearestTextElement(direction); + goto = s.startElement; + caretTo = s.startOffset; } - parent.data('wlxmlNode').detach(); } else { - goto = element.getNearestTextElement(direction); - element.data('wlxmlNode').detach(); + if(s.endsAtEnd()) { + goto = s.canvas.getNearestTextElement('below', s.startElement); + caretTo = 'start'; + } else { + goto = s.endElement; + caretTo = 0; + } } - canvas.setCurrentElement(goto, {caretTo: caretTo}); - canvas.publisher('contentChanged'); + + var doc = s.canvas.wlxmlDocument; + doc.transaction(function() { + + doc.deleteText({ + from: { + node: s.startElement.wlxmlNode, + offset: s.startOffset + }, + to: { + node: s.endElement.wlxmlNode, + offset: s.endOffset + } + }); + + }, { + success: function() { + if(goto) { + if(!doc.containsNode(goto.wlxmlNode)) { + goto = s.startElement; + caretTo = s.startOffset; + } + s.canvas.setCurrentElement(goto, {caretTo: caretTo}); + } + } + }); + } - else if(cursorAtOperationEdge) { - // todo - event.preventDefault(); + }, + { // enter on an empty list item - creates paragraph after list + applies: function(e, s) { + var parent = s.element && s.element.wlxmlNode.parent(), + parentIsItem = parent && parent.is('item'), + itemIsOnList = parent && parent.parent() && parent.parent().is('list'), + onlyChild = parent.contents().length === 1; + return s.type === 'caret' && e.key === KEYS.ENTER && s.element.isEmpty() && onlyChild && + parentIsItem && itemIsOnList; + }, + run: function(e, s) { + var item = s.element.wlxmlNode.parent(), + list = item.parent(); + e.preventDefault(); + s.canvas.wlxmlDocument.transaction(function() { + var p = list.after({tagName: 'div', attrs: {'class': 'p'}}); + p.append({text: ''}); + item.detach(); + if(list.contents().length === 0) { + list.detach(); + } + return p; + }, { + success: function(p) { + s.canvas.setCurrentElement(p); + } + }); } - canvas.wlxmlDocument.endTransaction(); + }, + { // enter - split node + applies: function(e, s) { + return s.type === 'caret' && e.key === KEYS.ENTER && !s.element.parent().isRootElement(); + }, + run: function(e, s) { + var parent = s.element.parent(), + children = parent.children(), + result, goto, gotoOptions; + void(e); + e.preventDefault(); + if(children.length === 1 && s.element.isEmpty()) { + return; + } + + s.canvas.wlxmlDocument.transaction(function() { + result = s.element.wlxmlNode.breakContent({offset: s.offset}); + }, { + metadata: { + description: gettext('Splitting text'), + fragment: s.toDocumentFragment() + } + }); + + if(result.emptyText) { + goto = result.emptyText; + gotoOptions = {}; + } else { + goto = result.second; + gotoOptions = {caretTo: 'start'}; + } + + s.canvas.setCurrentElement(utils.getElementForNode(goto), gotoOptions); + } + }, + { // enter - new paragraph after image/video + applies: function (e, s) { + return s.type === 'nodeSelection' && e.key === KEYS.ENTER && !s.element.isRootElement(); + }, + run: function (e, s) { + var parent = s.element.parent(), + children = parent.children(), + result, goto, gotoOptions; + e.preventDefault(); + + s.canvas.wlxmlDocument.transaction(function() { + result = s.element.wlxmlNode.insertNewNode(); + }, { + metadata: { + description: gettext('Inserting node'), + fragment: s.toDocumentFragment() + } + }); + + s.canvas.setCurrentElement(utils.getElementForNode(result), {caretTo: 'start'}); + } } -}); +]; return { - handleKey: handleKey + handleKeyEvent: handleKeyEvent, + KEYS: KEYS }; }); \ No newline at end of file