lib/assets/javascripts/builder/components/code-mirror/show-hint.code-mirror.js
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
/* eslint-disable */
module.exports = function (CodeMirror) {
"use strict";
var HINT_ELEMENT_CLASS = "CodeMirror-hint";
var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active";
// This is the old interface, kept around for now to stay
// backwards-compatible.
CodeMirror.showHint = function(cm, getHints, options) {
if (!getHints) return cm.showHint(options);
if (options && options.async) getHints.async = true;
var newOpts = {hint: getHints};
if (options) for (var prop in options) newOpts[prop] = options[prop];
return cm.showHint(newOpts);
};
CodeMirror.defineExtension("showHint", function(options) {
options = parseOptions(this, this.getCursor("start"), options);
var selections = this.listSelections()
if (selections.length > 1) return;
// By default, don't allow completion when something is selected.
// A hint function can have a `supportsSelection` property to
// indicate that it can handle selections.
if (this.somethingSelected()) {
if (!options.hint.supportsSelection) return;
// Don't try with cross-line selections
for (var i = 0; i < selections.length; i++)
if (selections[i].head.line != selections[i].anchor.line) return;
}
if (this.state.completionActive) this.state.completionActive.close();
var completion = this.state.completionActive = new Completion(this, options);
if (!completion.options.hint) return;
CodeMirror.signal(this, "startCompletion", this);
completion.update(true);
});
function Completion(cm, options) {
this.cm = cm;
this.options = options;
this.widget = null;
this.debounce = 0;
this.tick = 0;
this.startPos = this.cm.getCursor("start");
this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length;
var self = this;
cm.on("cursorActivity", this.activityFunc = function() { self.cursorActivity(); });
}
var requestAnimationFrame = window.requestAnimationFrame || function(fn) {
return setTimeout(fn, 1000/60);
};
var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;
Completion.prototype = {
close: function() {
if (!this.active()) return;
this.cm.state.completionActive = null;
this.tick = null;
this.cm.off("cursorActivity", this.activityFunc);
if (this.widget && this.data) CodeMirror.signal(this.data, "close");
if (this.widget) this.widget.close();
CodeMirror.signal(this.cm, "endCompletion", this.cm);
},
active: function() {
return this.cm.state.completionActive == this;
},
pick: function(data, i) {
var completion = data.list[i];
if (completion.hint) completion.hint(this.cm, data, completion);
else this.cm.replaceRange(getText(completion, this.options), completion.from || data.from,
completion.to || data.to, "complete");
CodeMirror.signal(data, "pick", completion);
this.close();
},
cursorActivity: function() {
if (this.debounce) {
cancelAnimationFrame(this.debounce);
this.debounce = 0;
}
var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line);
if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||
pos.ch < this.startPos.ch || this.cm.somethingSelected() ||
(pos.ch && this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {
this.close();
} else {
var self = this;
this.debounce = requestAnimationFrame(function() {self.update();});
if (this.widget) this.widget.disable();
}
},
update: function(first) {
if (this.tick == null) return
var self = this, myTick = ++this.tick
fetchHints(this.options.hint, this.cm, this.options, function(data) {
if (self.tick == myTick) self.finishUpdate(data, first)
})
},
finishUpdate: function(data, first) {
if (this.data) CodeMirror.signal(this.data, "update");
var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle);
if (this.widget) this.widget.close();
if (data && this.data && isNewCompletion(this.data, data)) return;
this.data = data;
if (data && data.list.length) {
if (picked && data.list.length == 1) {
this.pick(data, 0);
} else {
this.widget = new Widget(this, data);
CodeMirror.signal(data, "shown");
}
}
}
};
function isNewCompletion(old, nw) {
var moved = CodeMirror.cmpPos(nw.from, old.from)
return moved > 0 && old.to.ch - old.from.ch != nw.to.ch - nw.from.ch
}
function parseOptions(cm, pos, options) {
var editor = cm.options.hintOptions;
var out = {};
for (var prop in defaultOptions) out[prop] = defaultOptions[prop];
if (editor) for (var prop in editor)
if (editor[prop] !== undefined) out[prop] = editor[prop];
if (options) for (var prop in options)
if (options[prop] !== undefined) out[prop] = options[prop];
if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos)
return out;
}
function getText(completion, options) {
var autocompleteSuffix = options && options.autocompleteSuffix ? options.autocompleteSuffix : '';
var autocompletePrefix = options && options.autocompletePrefix ? options.autocompletePrefix : '';
if (typeof completion !== "string") {
completion = completion.text
}
return autocompletePrefix + completion + autocompleteSuffix;
}
function getType(completion) {
if (typeof completion == "string") return '';
else return completion.type;
}
function buildKeyMap(completion, handle) {
var baseMap = {
Up: function() {handle.moveFocus(-1);},
Down: function() {handle.moveFocus(1);},
PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);},
PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);},
Home: function() {handle.setFocus(0);},
End: function() {handle.setFocus(handle.length - 1);},
Enter: handle.pick,
Tab: handle.pick,
Esc: handle.close
};
var custom = completion.options.customKeys;
var ourMap = custom ? {} : baseMap;
function addBinding(key, val) {
var bound;
if (typeof val != "string")
bound = function(cm) { return val(cm, handle); };
// This mechanism is deprecated
else if (baseMap.hasOwnProperty(val))
bound = baseMap[val];
else
bound = val;
ourMap[key] = bound;
}
if (custom)
for (var key in custom) if (custom.hasOwnProperty(key))
addBinding(key, custom[key]);
var extra = completion.options.extraKeys;
if (extra)
for (var key in extra) if (extra.hasOwnProperty(key))
addBinding(key, extra[key]);
return ourMap;
}
function getHintElement(hintsElement, el) {
while (el && el != hintsElement) {
if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el;
el = el.parentNode;
}
}
function styleHint(hint) {
var element = document.createElement(hint.displayText || getText(hint));
element = document.createElement("span");
element.className = 'CDB-Size-small has-letter';
element.innerHTML = hint.displayText || getText(hint);
var type = getType(hint);
if (type) {
element.className = 'CDB-Size-small has-letter';
element.dataset.type = type;
}
return element;
}
function Widget(completion, data) {
this.completion = completion;
this.data = data;
this.picked = false;
var widget = this, cm = completion.cm;
var hints = this.hints = document.createElement("ul");
hints.className = "CodeMirror-hints";
this.selectedHint = data.selectedHint || 0;
var element;
var completions = data.list;
for (var i = 0; i < completions.length; ++i) {
var elt = hints.appendChild(document.createElement("li")), cur = completions[i];
var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS);
if (cur.className != null) className = cur.className + " " + className;
elt.className = className;
if (cur.render) cur.render(elt, data, cur);
else {
element = styleHint(cur);
elt.appendChild(element);
}
elt.hintId = i;
}
var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
var left = pos.left, top = pos.bottom, below = true;
hints.style.left = left + "px";
hints.style.top = top + "px";
// If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
var winW = window.innerWidth || Math.max(document.body.offsetWidth, document.documentElement.offsetWidth);
var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight);
(completion.options.container || document.body).appendChild(hints);
var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH;
if (overlapY > 0) {
var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);
if (curTop - height > 0) { // Fits above cursor
hints.style.top = (top = pos.top - height) + "px";
below = false;
} else if (height > winH) {
hints.style.height = (winH - 5) + "px";
hints.style.top = (top = pos.bottom - box.top) + "px";
var cursor = cm.getCursor();
if (data.from.ch != cursor.ch) {
pos = cm.cursorCoords(cursor);
hints.style.left = (left = pos.left) + "px";
box = hints.getBoundingClientRect();
}
}
}
var overlapX = box.right - winW;
if (overlapX > 0) {
if (box.right - box.left > winW) {
hints.style.width = (winW - 5) + "px";
overlapX -= (box.right - box.left) - winW;
}
hints.style.left = (left = pos.left - overlapX) + "px";
}
cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); },
setFocus: function(n) { widget.changeActive(n); },
menuSize: function() { return widget.screenAmount(); },
length: completions.length,
close: function() { completion.close(); },
pick: function() { widget.pick(); },
data: data
}));
if (completion.options.closeOnUnfocus) {
var closingOnBlur;
cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); });
cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); });
}
var startScroll = cm.getScrollInfo();
cm.on("scroll", this.onScroll = function() {
var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
var newTop = top + startScroll.top - curScroll.top;
var point = newTop - (window.pageYOffset || (document.documentElement || document.body).scrollTop);
if (!below) point += hints.offsetHeight;
if (point <= editor.top || point >= editor.bottom) return completion.close();
hints.style.top = newTop + "px";
hints.style.left = (left + startScroll.left - curScroll.left) + "px";
});
CodeMirror.on(hints, "dblclick", function(e) {
var t = getHintElement(hints, e.target || e.srcElement);
if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();}
});
CodeMirror.on(hints, "click", function(e) {
var t = getHintElement(hints, e.target || e.srcElement);
if (t && t.hintId != null) {
widget.changeActive(t.hintId);
if (completion.options.completeOnSingleClick) widget.pick();
}
});
CodeMirror.on(hints, "mousedown", function() {
setTimeout(function(){cm.focus();}, 20);
});
CodeMirror.signal(data, "select", completions[0], hints.firstChild);
return true;
}
Widget.prototype = {
close: function() {
if (this.completion.widget != this) return;
this.completion.widget = null;
this.hints.parentNode.removeChild(this.hints);
this.completion.cm.removeKeyMap(this.keyMap);
var cm = this.completion.cm;
if (this.completion.options.closeOnUnfocus) {
cm.off("blur", this.onBlur);
cm.off("focus", this.onFocus);
}
cm.off("scroll", this.onScroll);
},
disable: function() {
this.completion.cm.removeKeyMap(this.keyMap);
var widget = this;
this.keyMap = {Enter: function() { widget.picked = true; }};
this.completion.cm.addKeyMap(this.keyMap);
},
pick: function() {
this.completion.pick(this.data, this.selectedHint);
},
changeActive: function(i, avoidWrap) {
if (i >= this.data.list.length)
i = avoidWrap ? this.data.list.length - 1 : 0;
else if (i < 0)
i = avoidWrap ? 0 : this.data.list.length - 1;
if (this.selectedHint == i) return;
var node = this.hints.childNodes[this.selectedHint];
node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
node = this.hints.childNodes[this.selectedHint = i];
node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
if (node.offsetTop < this.hints.scrollTop)
this.hints.scrollTop = node.offsetTop - 3;
else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3;
CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
},
screenAmount: function() {
return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;
}
};
function applicableHelpers(cm, helpers) {
if (!cm.somethingSelected()) return helpers
var result = []
for (var i = 0; i < helpers.length; i++)
if (helpers[i].supportsSelection) result.push(helpers[i])
return result
}
function fetchHints(hint, cm, options, callback) {
if (hint.async) {
hint(cm, callback, options)
} else {
var result = hint(cm, options)
if (result && result.then) result.then(callback)
else callback(result)
}
}
function resolveAutoHints(cm, pos) {
var helpers = cm.getHelpers(pos, "hint"), words
if (helpers.length) {
var resolved = function(cm, callback, options) {
var app = applicableHelpers(cm, helpers);
function run(i) {
if (i == app.length) return callback(null)
fetchHints(app[i], cm, options, function(result) {
if (result && result.list.length > 0) callback(result)
else run(i + 1)
})
}
run(0)
}
resolved.async = true
resolved.supportsSelection = true
return resolved
} else if (words = cm.getHelper(cm.getCursor(), "hintWords")) {
return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) }
} else if (CodeMirror.hint.anyword) {
return function(cm, options) { return CodeMirror.hint.anyword(cm, options) }
} else {
return function() {}
}
}
CodeMirror.registerHelper("hint", "auto", {
resolve: resolveAutoHints
});
CodeMirror.registerHelper("hint", "fromList", function(cm, options) {
var cur = cm.getCursor(), token = cm.getTokenAt(cur);
var to = CodeMirror.Pos(cur.line, token.end);
if (token.string && /\w/.test(token.string[token.string.length - 1])) {
var term = token.string, from = CodeMirror.Pos(cur.line, token.start);
} else {
var term = "", from = to;
}
var found = [];
for (var i = 0; i < options.words.length; i++) {
var word = options.words[i];
if (word.slice(0, term.length) == term)
found.push(word);
}
if (found.length) return {list: found, from: from, to: to};
});
CodeMirror.commands.autocomplete = CodeMirror.showHint;
var defaultOptions = {
hint: CodeMirror.hint.auto,
completeSingle: true,
alignWithWord: true,
closeCharacters: /[\s()\[\]{};:>,]/,
closeOnUnfocus: true,
completeOnSingleClick: true,
container: null,
customKeys: null,
extraKeys: null
};
CodeMirror.defineOption("hintOptions", null);
};
/* eslint-enable */