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import { operation, runInOp } from "../display/operations";
import { prepareSelection } from "../display/selection";
import { regChange } from "../display/view_tracking";
import { applyTextInput, copyableRanges, disableBrowserMagic, handlePaste, hiddenTextarea, lastCopied, setLastCopied } from "./input";
import { cmp, maxPos, minPos, Pos } from "../line/pos";
import { getBetween, getLine, lineNo } from "../line/utils_line";
import { findViewForLine, findViewIndex, mapFromLineView, nodeAndOffsetInLineMap } from "../measurement/position_measurement";
import { replaceRange } from "../model/changes";
import { simpleSelection } from "../model/selection";
import { setSelection } from "../model/selection_updates";
import { getBidiPartAt, getOrder } from "../util/bidi";
import { gecko, ie_version } from "../util/browser";
import { contains, range, removeChildrenAndAdd, selectInput } from "../util/dom";
import { on, signalDOMEvent } from "../util/event";
import { copyObj, Delayed, lst, nothing, sel_dontScroll } from "../util/misc";
// CONTENTEDITABLE INPUT STYLE
export default function ContentEditableInput(cm) {
this.cm = cm;
this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
this.polling = new Delayed();
this.gracePeriod = false;
}
ContentEditableInput.prototype = copyObj({
init: function(display) {
var input = this, cm = input.cm;
var div = input.div = display.lineDiv;
disableBrowserMagic(div, cm.options.spellcheck);
on(div, "paste", function(e) {
if (signalDOMEvent(cm, e) || handlePaste(e, cm)) return
// IE doesn't fire input events, so we schedule a read for the pasted content in this way
if (ie_version <= 11) setTimeout(operation(cm, function() {
if (!input.pollContent()) regChange(cm);
}), 20)
})
on(div, "compositionstart", function(e) {
var data = e.data;
input.composing = {sel: cm.doc.sel, data: data, startData: data};
if (!data) return;
var prim = cm.doc.sel.primary();
var line = cm.getLine(prim.head.line);
var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length));
if (found > -1 && found <= prim.head.ch)
input.composing.sel = simpleSelection(Pos(prim.head.line, found),
Pos(prim.head.line, found + data.length));
});
on(div, "compositionupdate", function(e) {
input.composing.data = e.data;
});
on(div, "compositionend", function(e) {
var ours = input.composing;
if (!ours) return;
if (e.data != ours.startData && !/\u200b/.test(e.data))
ours.data = e.data;
// Need a small delay to prevent other code (input event,
// selection polling) from doing damage when fired right after
// compositionend.
setTimeout(function() {
if (!ours.handled)
input.applyComposition(ours);
if (input.composing == ours)
input.composing = null;
}, 50);
});
on(div, "touchstart", function() {
input.forceCompositionEnd();
});
on(div, "input", function() {
if (input.composing) return;
if (cm.isReadOnly() || !input.pollContent())
runInOp(input.cm, function() {regChange(cm);});
});
function onCopyCut(e) {
if (signalDOMEvent(cm, e)) return
if (cm.somethingSelected()) {
setLastCopied({lineWise: false, text: cm.getSelections()});
if (e.type == "cut") cm.replaceSelection("", null, "cut");
} else if (!cm.options.lineWiseCopyCut) {
return;
} else {
var ranges = copyableRanges(cm);
setLastCopied({lineWise: true, text: ranges.text});
if (e.type == "cut") {
cm.operation(function() {
cm.setSelections(ranges.ranges, 0, sel_dontScroll);
cm.replaceSelection("", null, "cut");
});
}
}
if (e.clipboardData) {
e.clipboardData.clearData();
var content = lastCopied.text.join("\n")
// iOS exposes the clipboard API, but seems to discard content inserted into it
e.clipboardData.setData("Text", content);
if (e.clipboardData.getData("Text") == content) {
e.preventDefault();
return
}
}
// Old-fashioned briefly-focus-a-textarea hack
var kludge = hiddenTextarea(), te = kludge.firstChild;
cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
te.value = lastCopied.text.join("\n");
var hadFocus = document.activeElement;
selectInput(te);
setTimeout(function() {
cm.display.lineSpace.removeChild(kludge);
hadFocus.focus();
if (hadFocus == div) input.showPrimarySelection()
}, 50);
}
on(div, "copy", onCopyCut);
on(div, "cut", onCopyCut);
},
prepareSelection: function() {
var result = prepareSelection(this.cm, false);
result.focus = this.cm.state.focused;
return result;
},
showSelection: function(info, takeFocus) {
if (!info || !this.cm.display.view.length) return;
if (info.focus || takeFocus) this.showPrimarySelection();
this.showMultipleSelections(info);
},
showPrimarySelection: function() {
var sel = window.getSelection(), prim = this.cm.doc.sel.primary();
var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset);
var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset);
if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&
cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)
return;
var start = posToDOM(this.cm, prim.from());
var end = posToDOM(this.cm, prim.to());
if (!start && !end) return;
var view = this.cm.display.view;
var old = sel.rangeCount && sel.getRangeAt(0);
if (!start) {
start = {node: view[0].measure.map[2], offset: 0};
} else if (!end) { // FIXME dangerously hacky
var measure = view[view.length - 1].measure;
var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};
}
try { var rng = range(start.node, start.offset, end.offset, end.node); }
catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
if (rng) {
if (!gecko && this.cm.state.focused) {
sel.collapse(start.node, start.offset);
if (!rng.collapsed) sel.addRange(rng);
} else {
sel.removeAllRanges();
sel.addRange(rng);
}
if (old && sel.anchorNode == null) sel.addRange(old);
else if (gecko) this.startGracePeriod();
}
this.rememberSelection();
},
startGracePeriod: function() {
var input = this;
clearTimeout(this.gracePeriod);
this.gracePeriod = setTimeout(function() {
input.gracePeriod = false;
if (input.selectionChanged())
input.cm.operation(function() { input.cm.curOp.selectionChanged = true; });
}, 20);
},
showMultipleSelections: function(info) {
removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
},
rememberSelection: function() {
var sel = window.getSelection();
this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
},
selectionInEditor: function() {
var sel = window.getSelection();
if (!sel.rangeCount) return false;
var node = sel.getRangeAt(0).commonAncestorContainer;
return contains(this.div, node);
},
focus: function() {
if (this.cm.options.readOnly != "nocursor") this.div.focus();
},
blur: function() { this.div.blur(); },
getField: function() { return this.div; },
supportsTouch: function() { return true; },
receivedFocus: function() {
var input = this;
if (this.selectionInEditor())
this.pollSelection();
else
runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; });
function poll() {
if (input.cm.state.focused) {
input.pollSelection();
input.polling.set(input.cm.options.pollInterval, poll);
}
}
this.polling.set(this.cm.options.pollInterval, poll);
},
selectionChanged: function() {
var sel = window.getSelection();
return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset;
},
pollSelection: function() {
if (!this.composing && !this.gracePeriod && this.selectionChanged()) {
var sel = window.getSelection(), cm = this.cm;
this.rememberSelection();
var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
var head = domToPos(cm, sel.focusNode, sel.focusOffset);
if (anchor && head) runInOp(cm, function() {
setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
if (anchor.bad || head.bad) cm.curOp.selectionChanged = true;
});
}
},
pollContent: function() {
var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
var from = sel.from(), to = sel.to();
if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false;
var fromIndex;
if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
var fromLine = lineNo(display.view[0].line);
var fromNode = display.view[0].node;
} else {
var fromLine = lineNo(display.view[fromIndex].line);
var fromNode = display.view[fromIndex - 1].node.nextSibling;
}
var toIndex = findViewIndex(cm, to.line);
if (toIndex == display.view.length - 1) {
var toLine = display.viewTo - 1;
var toNode = display.lineDiv.lastChild;
} else {
var toLine = lineNo(display.view[toIndex + 1].line) - 1;
var toNode = display.view[toIndex + 1].node.previousSibling;
}
var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
while (newText.length > 1 && oldText.length > 1) {
if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
else break;
}
var cutFront = 0, cutEnd = 0;
var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
++cutFront;
var newBot = lst(newText), oldBot = lst(oldText);
var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
oldBot.length - (oldText.length == 1 ? cutFront : 0));
while (cutEnd < maxCutEnd &&
newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
++cutEnd;
newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd);
newText[0] = newText[0].slice(cutFront);
var chFrom = Pos(fromLine, cutFront);
var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
replaceRange(cm.doc, newText, chFrom, chTo, "+input");
return true;
}
},
ensurePolled: function() {
this.forceCompositionEnd();
},
reset: function() {
this.forceCompositionEnd();
},
forceCompositionEnd: function() {
if (!this.composing || this.composing.handled) return;
this.applyComposition(this.composing);
this.composing.handled = true;
this.div.blur();
this.div.focus();
},
applyComposition: function(composing) {
if (this.cm.isReadOnly())
operation(this.cm, regChange)(this.cm)
else if (composing.data && composing.data != composing.startData)
operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel);
},
setUneditable: function(node) {
node.contentEditable = "false"
},
onKeyPress: function(e) {
e.preventDefault();
if (!this.cm.isReadOnly())
operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);
},
readOnlyChanged: function(val) {
this.div.contentEditable = String(val != "nocursor")
},
onContextMenu: nothing,
resetPosition: nothing,
needsContentAttribute: true
}, ContentEditableInput.prototype);
function posToDOM(cm, pos) {
var view = findViewForLine(cm, pos.line);
if (!view || view.hidden) return null;
var line = getLine(cm.doc, pos.line);
var info = mapFromLineView(view, line, pos.line);
var order = getOrder(line), side = "left";
if (order) {
var partPos = getBidiPartAt(order, pos.ch);
side = partPos % 2 ? "right" : "left";
}
var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
result.offset = result.collapse == "right" ? result.end : result.start;
return result;
}
function badPos(pos, bad) { if (bad) pos.bad = true; return pos; }
function domTextBetween(cm, from, to, fromLine, toLine) {
var text = "", closing = false, lineSep = cm.doc.lineSeparator();
function recognizeMarker(id) { return function(marker) { return marker.id == id; }; }
function walk(node) {
if (node.nodeType == 1) {
var cmText = node.getAttribute("cm-text");
if (cmText != null) {
if (cmText == "") cmText = node.textContent.replace(/\u200b/g, "");
text += cmText;
return;
}
var markerID = node.getAttribute("cm-marker"), range;
if (markerID) {
var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
if (found.length && (range = found[0].find()))
text += getBetween(cm.doc, range.from, range.to).join(lineSep);
return;
}
if (node.getAttribute("contenteditable") == "false") return;
for (var i = 0; i < node.childNodes.length; i++)
walk(node.childNodes[i]);
if (/^(pre|div|p)$/i.test(node.nodeName))
closing = true;
} else if (node.nodeType == 3) {
var val = node.nodeValue;
if (!val) return;
if (closing) {
text += lineSep;
closing = false;
}
text += val;
}
}
for (;;) {
walk(from);
if (from == to) break;
from = from.nextSibling;
}
return text;
}
function domToPos(cm, node, offset) {
var lineNode;
if (node == cm.display.lineDiv) {
lineNode = cm.display.lineDiv.childNodes[offset];
if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true);
node = null; offset = 0;
} else {
for (lineNode = node;; lineNode = lineNode.parentNode) {
if (!lineNode || lineNode == cm.display.lineDiv) return null;
if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break;
}
}
for (var i = 0; i < cm.display.view.length; i++) {
var lineView = cm.display.view[i];
if (lineView.node == lineNode)
return locateNodeInLineView(lineView, node, offset);
}
}
function locateNodeInLineView(lineView, node, offset) {
var wrapper = lineView.text.firstChild, bad = false;
if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true);
if (node == wrapper) {
bad = true;
node = wrapper.childNodes[offset];
offset = 0;
if (!node) {
var line = lineView.rest ? lst(lineView.rest) : lineView.line;
return badPos(Pos(lineNo(line), line.text.length), bad);
}
}
var textNode = node.nodeType == 3 ? node : null, topNode = node;
if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
textNode = node.firstChild;
if (offset) offset = textNode.nodeValue.length;
}
while (topNode.parentNode != wrapper) topNode = topNode.parentNode;
var measure = lineView.measure, maps = measure.maps;
function find(textNode, topNode, offset) {
for (var i = -1; i < (maps ? maps.length : 0); i++) {
var map = i < 0 ? measure.map : maps[i];
for (var j = 0; j < map.length; j += 3) {
var curNode = map[j + 2];
if (curNode == textNode || curNode == topNode) {
var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
var ch = map[j] + offset;
if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)];
return Pos(line, ch);
}
}
}
}
var found = find(textNode, topNode, offset);
if (found) return badPos(found, bad);
// FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
found = find(after, after.firstChild, 0);
if (found)
return badPos(Pos(found.line, found.ch - dist), bad);
else
dist += after.textContent.length;
}
for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) {
found = find(before, before.firstChild, -1);
if (found)
return badPos(Pos(found.line, found.ch + dist), bad);
else
dist += before.textContent.length;
}
}