/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ /* vim: set ts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ /** * Basic use: * let spanToEdit = document.getElementById("somespan"); * * editableField({ * element: spanToEdit, * done: function(value, commit, direction) { * if (commit) { * spanToEdit.textContent = value; * } * }, * trigger: "dblclick" * }); * * See editableField() for more options. */ "use strict"; const Services = require("Services"); const focusManager = Services.focus; const {KeyCodes} = require("devtools/client/shared/keycodes"); const HTML_NS = "http://www.w3.org/1999/xhtml"; const CONTENT_TYPES = { PLAIN_TEXT: 0, CSS_VALUE: 1, CSS_MIXED: 2, CSS_PROPERTY: 3, }; // The limit of 500 autocomplete suggestions should not be reached but is kept // for safety. const MAX_POPUP_ENTRIES = 500; const FOCUS_FORWARD = focusManager.MOVEFOCUS_FORWARD; const FOCUS_BACKWARD = focusManager.MOVEFOCUS_BACKWARD; const EventEmitter = require("devtools/shared/event-emitter"); const { findMostRelevantCssPropertyIndex } = require("./suggestion-picker"); /** * Helper to check if the provided key matches one of the expected keys. * Keys will be prefixed with DOM_VK_ and should match a key in KeyCodes. * * @param {String} key * the key to check (can be a keyCode). * @param {...String} keys * list of possible keys allowed. * @return {Boolean} true if the key matches one of the keys. */ function isKeyIn(key, ...keys) { return keys.some(expectedKey => { return key === KeyCodes["DOM_VK_" + expectedKey]; }); } /** * Mark a span editable. |editableField| will listen for the span to * be focused and create an InlineEditor to handle text input. * Changes will be committed when the InlineEditor's input is blurred * or dropped when the user presses escape. * * @param {Object} options * Options for the editable field, including: * {Element} element: * (required) The span to be edited on focus. * {Function} canEdit: * Will be called before creating the inplace editor. Editor * won't be created if canEdit returns false. * {Function} start: * Will be called when the inplace editor is initialized. * {Function} change: * Will be called when the text input changes. Will be called * with the current value of the text input. * {Function} done: * Called when input is committed or blurred. Called with * current value, a boolean telling the caller whether to * commit the change, and the direction of the next element to be * selected. Direction may be one of Services.focus.MOVEFOCUS_FORWARD, * Services.focus.MOVEFOCUS_BACKWARD, or null (no movement). * This function is called before the editor has been torn down. * {Function} destroy: * Called when the editor is destroyed and has been torn down. * {Function} contextMenu: * Called when the user triggers a contextmenu event on the input. * {Object} advanceChars: * This can be either a string or a function. * If it is a string, then if any characters in it are typed, * focus will advance to the next element. * Otherwise, if it is a function, then the function will * be called with three arguments: a key code, the current text, * and the insertion point. If the function returns true, * then the focus advance takes place. If it returns false, * then the character is inserted instead. * {Boolean} stopOnReturn: * If true, the return key will not advance the editor to the next * focusable element. * {Boolean} stopOnTab: * If true, the tab key will not advance the editor to the next * focusable element. * {Boolean} stopOnShiftTab: * If true, shift tab will not advance the editor to the previous * focusable element. * {String} trigger: The DOM event that should trigger editing, * defaults to "click" * {Boolean} multiline: Should the editor be a multiline textarea? * defaults to false * {Function or Number} maxWidth: * Should the editor wrap to remain below the provided max width. Only * available if multiline is true. If a function is provided, it will be * called when replacing the element by the inplace input. * {Boolean} trimOutput: Should the returned string be trimmed? * defaults to true * {Boolean} preserveTextStyles: If true, do not copy text-related styles * from `element` to the new input. * defaults to false * {Object} cssProperties: An instance of CSSProperties. */ function editableField(options) { return editableItem(options, function (element, event) { if (!options.element.inplaceEditor) { new InplaceEditor(options, event); } }); } exports.editableField = editableField; /** * Handle events for an element that should respond to * clicks and sit in the editing tab order, and call * a callback when it is activated. * * @param {Object} options * The options for this editor, including: * {Element} element: The DOM element. * {String} trigger: The DOM event that should trigger editing, * defaults to "click" * @param {Function} callback * Called when the editor is activated. * @return {Function} function which calls callback */ function editableItem(options, callback) { let trigger = options.trigger || "click"; let element = options.element; element.addEventListener(trigger, function (evt) { if (evt.target.nodeName !== "a") { let win = this.ownerDocument.defaultView; let selection = win.getSelection(); if (trigger != "click" || selection.isCollapsed) { callback(element, evt); } evt.stopPropagation(); } }, false); // If focused by means other than a click, start editing by // pressing enter or space. element.addEventListener("keypress", function (evt) { if (isKeyIn(evt.keyCode, "RETURN") || isKeyIn(evt.charCode, "SPACE")) { callback(element); } }, true); // Ugly workaround - the element is focused on mousedown but // the editor is activated on click/mouseup. This leads // to an ugly flash of the focus ring before showing the editor. // So hide the focus ring while the mouse is down. element.addEventListener("mousedown", function (evt) { if (evt.target.nodeName !== "a") { let cleanup = function () { element.style.removeProperty("outline-style"); element.removeEventListener("mouseup", cleanup, false); element.removeEventListener("mouseout", cleanup, false); }; element.style.setProperty("outline-style", "none"); element.addEventListener("mouseup", cleanup, false); element.addEventListener("mouseout", cleanup, false); } }, false); // Mark the element editable field for tab // navigation while editing. element._editable = true; // Save the trigger type so we can dispatch this later element._trigger = trigger; // Add button semantics to the element, to indicate that it can be activated. element.setAttribute("role", "button"); return function turnOnEditMode() { callback(element); }; } exports.editableItem = editableItem; /* * Various API consumers (especially tests) sometimes want to grab the * inplaceEditor expando off span elements. However, when each global has its * own compartment, those expandos live on Xray wrappers that are only visible * within this JSM. So we provide a little workaround here. */ function getInplaceEditorForSpan(span) { return span.inplaceEditor; } exports.getInplaceEditorForSpan = getInplaceEditorForSpan; function InplaceEditor(options, event) { this.elt = options.element; let doc = this.elt.ownerDocument; this.doc = doc; this.elt.inplaceEditor = this; this.cssProperties = options.cssProperties; this.change = options.change; this.done = options.done; this.contextMenu = options.contextMenu; this.destroy = options.destroy; this.initial = options.initial ? options.initial : this.elt.textContent; this.multiline = options.multiline || false; this.maxWidth = options.maxWidth; if (typeof this.maxWidth == "function") { this.maxWidth = this.maxWidth(); } this.trimOutput = options.trimOutput === undefined ? true : !!options.trimOutput; this.stopOnShiftTab = !!options.stopOnShiftTab; this.stopOnTab = !!options.stopOnTab; this.stopOnReturn = !!options.stopOnReturn; this.contentType = options.contentType || CONTENT_TYPES.PLAIN_TEXT; this.property = options.property; this.popup = options.popup; this.preserveTextStyles = options.preserveTextStyles === undefined ? false : !!options.preserveTextStyles; this._onBlur = this._onBlur.bind(this); this._onWindowBlur = this._onWindowBlur.bind(this); this._onKeyPress = this._onKeyPress.bind(this); this._onInput = this._onInput.bind(this); this._onKeyup = this._onKeyup.bind(this); this._onAutocompletePopupClick = this._onAutocompletePopupClick.bind(this); this._onContextMenu = this._onContextMenu.bind(this); this._createInput(); // Hide the provided element and add our editor. this.originalDisplay = this.elt.style.display; this.elt.style.display = "none"; this.elt.parentNode.insertBefore(this.input, this.elt); // After inserting the input to have all CSS styles applied, start autosizing. this._autosize(); this.inputCharDimensions = this._getInputCharDimensions(); // Pull out character codes for advanceChars, listing the // characters that should trigger a blur. if (typeof options.advanceChars === "function") { this._advanceChars = options.advanceChars; } else { let advanceCharcodes = {}; let advanceChars = options.advanceChars || ""; for (let i = 0; i < advanceChars.length; i++) { advanceCharcodes[advanceChars.charCodeAt(i)] = true; } this._advanceChars = charCode => charCode in advanceCharcodes; } this.input.focus(); if (typeof options.selectAll == "undefined" || options.selectAll) { this.input.select(); } if (this.contentType == CONTENT_TYPES.CSS_VALUE && this.input.value == "") { this._maybeSuggestCompletion(false); } this.input.addEventListener("blur", this._onBlur, false); this.input.addEventListener("keypress", this._onKeyPress, false); this.input.addEventListener("input", this._onInput, false); this.input.addEventListener("dblclick", this._stopEventPropagation, false); this.input.addEventListener("click", this._stopEventPropagation, false); this.input.addEventListener("mousedown", this._stopEventPropagation, false); this.input.addEventListener("contextmenu", this._onContextMenu, false); this.doc.defaultView.addEventListener("blur", this._onWindowBlur, false); this.validate = options.validate; if (this.validate) { this.input.addEventListener("keyup", this._onKeyup, false); } this._updateSize(); EventEmitter.decorate(this); if (options.start) { options.start(this, event); } } exports.InplaceEditor = InplaceEditor; InplaceEditor.CONTENT_TYPES = CONTENT_TYPES; InplaceEditor.prototype = { get currentInputValue() { let val = this.trimOutput ? this.input.value.trim() : this.input.value; return val; }, _createInput: function () { this.input = this.doc.createElementNS(HTML_NS, this.multiline ? "textarea" : "input"); this.input.inplaceEditor = this; if (this.multiline) { // Hide the textarea resize handle. this.input.style.resize = "none"; this.input.style.overflow = "hidden"; } this.input.classList.add("styleinspector-propertyeditor"); this.input.value = this.initial; if (!this.preserveTextStyles) { copyTextStyles(this.elt, this.input); } }, /** * Get rid of the editor. */ _clear: function () { if (!this.input) { // Already cleared. return; } this.input.removeEventListener("blur", this._onBlur, false); this.input.removeEventListener("keypress", this._onKeyPress, false); this.input.removeEventListener("keyup", this._onKeyup, false); this.input.removeEventListener("input", this._onInput, false); this.input.removeEventListener("dblclick", this._stopEventPropagation, false); this.input.removeEventListener("click", this._stopEventPropagation, false); this.input.removeEventListener("mousedown", this._stopEventPropagation, false); this.input.removeEventListener("contextmenu", this._onContextMenu, false); this.doc.defaultView.removeEventListener("blur", this._onWindowBlur, false); this._stopAutosize(); this.elt.style.display = this.originalDisplay; if (this.doc.activeElement == this.input) { this.elt.focus(); } this.input.remove(); this.input = null; delete this.elt.inplaceEditor; delete this.elt; if (this.destroy) { this.destroy(); } }, /** * Keeps the editor close to the size of its input string. This is pretty * crappy, suggestions for improvement welcome. */ _autosize: function () { // Create a hidden, absolutely-positioned span to measure the text // in the input. Boo. // We can't just measure the original element because a) we don't // change the underlying element's text ourselves (we leave that // up to the client), and b) without tweaking the style of the // original element, it might wrap differently or something. this._measurement = this.doc.createElementNS(HTML_NS, this.multiline ? "pre" : "span"); this._measurement.className = "autosizer"; this.elt.parentNode.appendChild(this._measurement); let style = this._measurement.style; style.visibility = "hidden"; style.position = "absolute"; style.top = "0"; style.left = "0"; if (this.multiline) { style.whiteSpace = "pre-wrap"; style.wordWrap = "break-word"; if (this.maxWidth) { style.maxWidth = this.maxWidth + "px"; // Use position fixed to measure dimensions without any influence from // the container of the editor. style.position = "fixed"; } } copyAllStyles(this.input, this._measurement); this._updateSize(); }, /** * Clean up the mess created by _autosize(). */ _stopAutosize: function () { if (!this._measurement) { return; } this._measurement.remove(); delete this._measurement; }, /** * Size the editor to fit its current contents. */ _updateSize: function () { // Replace spaces with non-breaking spaces. Otherwise setting // the span's textContent will collapse spaces and the measurement // will be wrong. let content = this.input.value; let unbreakableSpace = "\u00a0"; // Make sure the content is not empty. if (content === "") { content = unbreakableSpace; } // If content ends with a new line, add a blank space to force the autosize // element to adapt its height. if (content.lastIndexOf("\n") === content.length - 1) { content = content + unbreakableSpace; } if (!this.multiline) { content = content.replace(/ /g, unbreakableSpace); } this._measurement.textContent = content; // Do not use offsetWidth: it will round floating width values. let width = this._measurement.getBoundingClientRect().width + 2; if (this.multiline) { if (this.maxWidth) { width = Math.min(this.maxWidth, width); } let height = this._measurement.getBoundingClientRect().height; this.input.style.height = height + "px"; } this.input.style.width = width + "px"; }, /** * Get the width and height of a single character in the input to properly * position the autocompletion popup. */ _getInputCharDimensions: function () { // Just make the text content to be 'x' to get the width and height of any // character in a monospace font. this._measurement.textContent = "x"; let width = this._measurement.clientWidth; let height = this._measurement.clientHeight; return { width, height }; }, /** * Increment property values in rule view. * * @param {Number} increment * The amount to increase/decrease the property value. * @return {Boolean} true if value has been incremented. */ _incrementValue: function (increment) { let value = this.input.value; let selectionStart = this.input.selectionStart; let selectionEnd = this.input.selectionEnd; let newValue = this._incrementCSSValue(value, increment, selectionStart, selectionEnd); if (!newValue) { return false; } this.input.value = newValue.value; this.input.setSelectionRange(newValue.start, newValue.end); this._doValidation(); // Call the user's change handler if available. if (this.change) { this.change(this.currentInputValue); } return true; }, /** * Increment the property value based on the property type. * * @param {String} value * Property value. * @param {Number} increment * Amount to increase/decrease the property value. * @param {Number} selStart * Starting index of the value. * @param {Number} selEnd * Ending index of the value. * @return {Object} object with properties 'value', 'start', and 'end'. */ _incrementCSSValue: function (value, increment, selStart, selEnd) { let range = this._parseCSSValue(value, selStart); let type = (range && range.type) || ""; let rawValue = range ? value.substring(range.start, range.end) : ""; let preRawValue = range ? value.substr(0, range.start) : ""; let postRawValue = range ? value.substr(range.end) : ""; let info; let incrementedValue = null, selection; if (type === "num") { if (rawValue == "0") { info = {}; info.units = this._findCompatibleUnit(preRawValue, postRawValue); } let newValue = this._incrementRawValue(rawValue, increment, info); if (newValue !== null) { incrementedValue = newValue; selection = [0, incrementedValue.length]; } } else if (type === "hex") { let exprOffset = selStart - range.start; let exprOffsetEnd = selEnd - range.start; let newValue = this._incHexColor(rawValue, increment, exprOffset, exprOffsetEnd); if (newValue) { incrementedValue = newValue.value; selection = newValue.selection; } } else { if (type === "rgb" || type === "hsl") { info = {}; let part = value.substring(range.start, selStart).split(",").length - 1; if (part === 3) { // alpha info.minValue = 0; info.maxValue = 1; } else if (type === "rgb") { info.minValue = 0; info.maxValue = 255; } else if (part !== 0) { // hsl percentage info.minValue = 0; info.maxValue = 100; // select the previous number if the selection is at the end of a // percentage sign. if (value.charAt(selStart - 1) === "%") { --selStart; } } } return this._incrementGenericValue(value, increment, selStart, selEnd, info); } if (incrementedValue === null) { return null; } return { value: preRawValue + incrementedValue + postRawValue, start: range.start + selection[0], end: range.start + selection[1] }; }, /** * Find a compatible unit to use for a CSS number value inserted between the * provided beforeValue and afterValue. The compatible unit will be picked * from a selection of default units corresponding to supported CSS value * dimensions (distance, angle, duration). * * @param {String} beforeValue * The string preceeding the number value in the current property * value. * @param {String} afterValue * The string following the number value in the current property value. * @return {String} a valid unit that can be used for this number value or * empty string if no match could be found. */ _findCompatibleUnit: function (beforeValue, afterValue) { if (!this.property || !this.property.name) { return ""; } // A DOM element is used to test the validity of various units. This is to // avoid having to do an async call to the server to get this information. let el = this.doc.createElement("div"); let units = ["px", "deg", "s"]; for (let unit of units) { let value = beforeValue + "1" + unit + afterValue; el.style.setProperty(this.property.name, ""); el.style.setProperty(this.property.name, value); if (el.style.getPropertyValue(this.property.name) !== "") { return unit; } } return ""; }, /** * Parses the property value and type. * * @param {String} value * Property value. * @param {Number} offset * Starting index of value. * @return {Object} object with properties 'value', 'start', 'end', and * 'type'. */ _parseCSSValue: function (value, offset) { /* eslint-disable max-len */ const reSplitCSS = /(url\("?[^"\)]+"?\)?)|(rgba?\([^)]*\)?)|(hsla?\([^)]*\)?)|(#[\dA-Fa-f]+)|(-?\d*\.?\d+(%|[a-z]{1,4})?)|"([^"]*)"?|'([^']*)'?|([^,\s\/!\(\)]+)|(!(.*)?)/; /* eslint-enable */ let start = 0; let m; // retreive values from left to right until we find the one at our offset while ((m = reSplitCSS.exec(value)) && (m.index + m[0].length < offset)) { value = value.substr(m.index + m[0].length); start += m.index + m[0].length; offset -= m.index + m[0].length; } if (!m) { return null; } let type; if (m[1]) { type = "url"; } else if (m[2]) { type = "rgb"; } else if (m[3]) { type = "hsl"; } else if (m[4]) { type = "hex"; } else if (m[5]) { type = "num"; } return { value: m[0], start: start + m.index, end: start + m.index + m[0].length, type: type }; }, /** * Increment the property value for types other than * number or hex, such as rgb, hsl, and file names. * * @param {String} value * Property value. * @param {Number} increment * Amount to increment/decrement. * @param {Number} offset * Starting index of the property value. * @param {Number} offsetEnd * Ending index of the property value. * @param {Object} info * Object with details about the property value. * @return {Object} object with properties 'value', 'start', and 'end'. */ _incrementGenericValue: function (value, increment, offset, offsetEnd, info) { // Try to find a number around the cursor to increment. let start, end; // Check if we are incrementing in a non-number context (such as a URL) if (/^-?[0-9.]/.test(value.substring(offset, offsetEnd)) && !(/\d/.test(value.charAt(offset - 1) + value.charAt(offsetEnd)))) { // We have a number selected, possibly with a suffix, and we are not in // the disallowed case of just part of a known number being selected. // Use that number. start = offset; end = offsetEnd; } else { // Parse periods as belonging to the number only if we are in a known // number context. (This makes incrementing the 1 in 'image1.gif' work.) let pattern = "[" + (info ? "0-9." : "0-9") + "]*"; let before = new RegExp(pattern + "$") .exec(value.substr(0, offset))[0].length; let after = new RegExp("^" + pattern) .exec(value.substr(offset))[0].length; start = offset - before; end = offset + after; // Expand the number to contain an initial minus sign if it seems // free-standing. if (value.charAt(start - 1) === "-" && (start - 1 === 0 || /[ (:,='"]/.test(value.charAt(start - 2)))) { --start; } } if (start !== end) { // Include percentages as part of the incremented number (they are // common enough). if (value.charAt(end) === "%") { ++end; } let first = value.substr(0, start); let mid = value.substring(start, end); let last = value.substr(end); mid = this._incrementRawValue(mid, increment, info); if (mid !== null) { return { value: first + mid + last, start: start, end: start + mid.length }; } } return null; }, /** * Increment the property value for numbers. * * @param {String} rawValue * Raw value to increment. * @param {Number} increment * Amount to increase/decrease the raw value. * @param {Object} info * Object with info about the property value. * @return {String} the incremented value. */ _incrementRawValue: function (rawValue, increment, info) { let num = parseFloat(rawValue); if (isNaN(num)) { return null; } let number = /\d+(\.\d+)?/.exec(rawValue); let units = rawValue.substr(number.index + number[0].length); if (info && "units" in info) { units = info.units; } // avoid rounding errors let newValue = Math.round((num + increment) * 1000) / 1000; if (info && "minValue" in info) { newValue = Math.max(newValue, info.minValue); } if (info && "maxValue" in info) { newValue = Math.min(newValue, info.maxValue); } newValue = newValue.toString(); return newValue + units; }, /** * Increment the property value for hex. * * @param {String} value * Property value. * @param {Number} increment * Amount to increase/decrease the property value. * @param {Number} offset * Starting index of the property value. * @param {Number} offsetEnd * Ending index of the property value. * @return {Object} object with properties 'value' and 'selection'. */ _incHexColor: function (rawValue, increment, offset, offsetEnd) { // Return early if no part of the rawValue is selected. if (offsetEnd > rawValue.length && offset >= rawValue.length) { return null; } if (offset < 1 && offsetEnd <= 1) { return null; } // Ignore the leading #. rawValue = rawValue.substr(1); --offset; --offsetEnd; // Clamp the selection to within the actual value. offset = Math.max(offset, 0); offsetEnd = Math.min(offsetEnd, rawValue.length); offsetEnd = Math.max(offsetEnd, offset); // Normalize #ABC -> #AABBCC. if (rawValue.length === 3) { rawValue = rawValue.charAt(0) + rawValue.charAt(0) + rawValue.charAt(1) + rawValue.charAt(1) + rawValue.charAt(2) + rawValue.charAt(2); offset *= 2; offsetEnd *= 2; } // Normalize #ABCD -> #AABBCCDD. if (rawValue.length === 4) { rawValue = rawValue.charAt(0) + rawValue.charAt(0) + rawValue.charAt(1) + rawValue.charAt(1) + rawValue.charAt(2) + rawValue.charAt(2) + rawValue.charAt(3) + rawValue.charAt(3); offset *= 2; offsetEnd *= 2; } if (rawValue.length !== 6 && rawValue.length !== 8) { return null; } // If no selection, increment an adjacent color, preferably one to the left. if (offset === offsetEnd) { if (offset === 0) { offsetEnd = 1; } else { offset = offsetEnd - 1; } } // Make the selection cover entire parts. offset -= offset % 2; offsetEnd += offsetEnd % 2; // Remap the increments from [0.1, 1, 10] to [1, 1, 16]. if (increment > -1 && increment < 1) { increment = (increment < 0 ? -1 : 1); } if (Math.abs(increment) === 10) { increment = (increment < 0 ? -16 : 16); } let isUpper = (rawValue.toUpperCase() === rawValue); for (let pos = offset; pos < offsetEnd; pos += 2) { // Increment the part in [pos, pos+2). let mid = rawValue.substr(pos, 2); let value = parseInt(mid, 16); if (isNaN(value)) { return null; } mid = Math.min(Math.max(value + increment, 0), 255).toString(16); while (mid.length < 2) { mid = "0" + mid; } if (isUpper) { mid = mid.toUpperCase(); } rawValue = rawValue.substr(0, pos) + mid + rawValue.substr(pos + 2); } return { value: "#" + rawValue, selection: [offset + 1, offsetEnd + 1] }; }, /** * Cycle through the autocompletion suggestions in the popup. * * @param {Boolean} reverse * true to select previous item from the popup. * @param {Boolean} noSelect * true to not select the text after selecting the newly selectedItem * from the popup. */ _cycleCSSSuggestion: function (reverse, noSelect) { // selectedItem can be null when nothing is selected in an empty editor. let {label, preLabel} = this.popup.selectedItem || {label: "", preLabel: ""}; if (reverse) { this.popup.selectPreviousItem(); } else { this.popup.selectNextItem(); } this._selectedIndex = this.popup.selectedIndex; let input = this.input; let pre = ""; if (input.selectionStart < input.selectionEnd) { pre = input.value.slice(0, input.selectionStart); } else { pre = input.value.slice(0, input.selectionStart - label.length + preLabel.length); } let post = input.value.slice(input.selectionEnd, input.value.length); let item = this.popup.selectedItem; let toComplete = item.label.slice(item.preLabel.length); input.value = pre + toComplete + post; if (!noSelect) { input.setSelectionRange(pre.length, pre.length + toComplete.length); } else { input.setSelectionRange(pre.length + toComplete.length, pre.length + toComplete.length); } this._updateSize(); // This emit is mainly for the purpose of making the test flow simpler. this.emit("after-suggest"); }, /** * Call the client's done handler and clear out. */ _apply: function (event, direction) { if (this._applied) { return null; } this._applied = true; if (this.done) { let val = this.cancelled ? this.initial : this.currentInputValue; return this.done(val, !this.cancelled, direction); } return null; }, /** * Hide the popup and cancel any pending popup opening. */ _onWindowBlur: function () { if (this.popup && this.popup.isOpen) { this.popup.hidePopup(); } if (this._openPopupTimeout) { this.doc.defaultView.clearTimeout(this._openPopupTimeout); } }, /** * Event handler called when the inplace-editor's input loses focus. */ _onBlur: function (event) { if (event && this.popup && this.popup.isOpen && this.popup.selectedIndex >= 0) { this._acceptPopupSuggestion(); } else { this._apply(); this._clear(); } }, /** * Event handler called by the autocomplete popup when receiving a click * event. */ _onAutocompletePopupClick: function () { this._acceptPopupSuggestion(); }, _acceptPopupSuggestion: function () { let label, preLabel; if (this._selectedIndex === undefined) { ({label, preLabel} = this.popup.getItemAtIndex(this.popup.selectedIndex)); } else { ({label, preLabel} = this.popup.getItemAtIndex(this._selectedIndex)); } let input = this.input; let pre = ""; // CSS_MIXED needs special treatment here to make it so that // multiple presses of tab will cycle through completions, but // without selecting the completed text. However, this same // special treatment will do the wrong thing for other editing // styles. if (input.selectionStart < input.selectionEnd || this.contentType !== CONTENT_TYPES.CSS_MIXED) { pre = input.value.slice(0, input.selectionStart); } else { pre = input.value.slice(0, input.selectionStart - label.length + preLabel.length); } let post = input.value.slice(input.selectionEnd, input.value.length); let item = this.popup.selectedItem; this._selectedIndex = this.popup.selectedIndex; let toComplete = item.label.slice(item.preLabel.length); input.value = pre + toComplete + post; input.setSelectionRange(pre.length + toComplete.length, pre.length + toComplete.length); this._updateSize(); // Wait for the popup to hide and then focus input async otherwise it does // not work. let onPopupHidden = () => { this.popup.off("popup-closed", onPopupHidden); this.doc.defaultView.setTimeout(()=> { input.focus(); this.emit("after-suggest"); }, 0); }; this.popup.on("popup-closed", onPopupHidden); this._hideAutocompletePopup(); }, /** * Handle the input field's keypress event. */ _onKeyPress: function (event) { let prevent = false; let key = event.keyCode; let input = this.input; let multilineNavigation = !this._isSingleLine() && isKeyIn(key, "UP", "DOWN", "LEFT", "RIGHT"); let isPlainText = this.contentType == CONTENT_TYPES.PLAIN_TEXT; let isPopupOpen = this.popup && this.popup.isOpen; let increment = 0; if (!isPlainText && !multilineNavigation) { increment = this._getIncrement(event); } if (isKeyIn(key, "PAGE_UP", "PAGE_DOWN")) { this._preventSuggestions = true; } let cycling = false; if (increment && this._incrementValue(increment)) { this._updateSize(); prevent = true; cycling = true; } if (isPopupOpen && isKeyIn(key, "UP", "DOWN", "PAGE_UP", "PAGE_DOWN")) { prevent = true; cycling = true; this._cycleCSSSuggestion(isKeyIn(key, "UP", "PAGE_UP")); this._doValidation(); } if (isKeyIn(key, "BACK_SPACE", "DELETE", "LEFT", "RIGHT", "HOME", "END")) { if (isPopupOpen) { this._hideAutocompletePopup(); } } else if (!cycling && !multilineNavigation && !event.metaKey && !event.altKey && !event.ctrlKey) { this._maybeSuggestCompletion(true); } if (this.multiline && event.shiftKey && isKeyIn(key, "RETURN")) { prevent = false; } else if ( this._advanceChars(event.charCode, input.value, input.selectionStart) || isKeyIn(key, "RETURN", "TAB")) { prevent = true; let direction; if ((this.stopOnReturn && isKeyIn(key, "RETURN")) || (this.stopOnTab && !event.shiftKey && isKeyIn(key, "TAB")) || (this.stopOnShiftTab && event.shiftKey && isKeyIn(key, "TAB"))) { direction = null; } else if (event.shiftKey && isKeyIn(key, "TAB")) { direction = FOCUS_BACKWARD; } else { direction = FOCUS_FORWARD; } // Now we don't want to suggest anything as we are moving out. this._preventSuggestions = true; // But we still want to show suggestions for css values. i.e. moving out // of css property input box in forward direction if (this.contentType == CONTENT_TYPES.CSS_PROPERTY && direction == FOCUS_FORWARD) { this._preventSuggestions = false; } if (isKeyIn(key, "TAB") && this.contentType == CONTENT_TYPES.CSS_MIXED) { if (this.popup && input.selectionStart < input.selectionEnd) { event.preventDefault(); input.setSelectionRange(input.selectionEnd, input.selectionEnd); this.emit("after-suggest"); return; } else if (this.popup && this.popup.isOpen) { event.preventDefault(); this._cycleCSSSuggestion(event.shiftKey, true); return; } } this._apply(event, direction); // Close the popup if open if (this.popup && this.popup.isOpen) { this._hideAutocompletePopup(); } if (direction !== null && focusManager.focusedElement === input) { // If the focused element wasn't changed by the done callback, // move the focus as requested. let next = moveFocus(this.doc.defaultView, direction); // If the next node to be focused has been tagged as an editable // node, trigger editing using the configured event if (next && next.ownerDocument === this.doc && next._editable) { let e = this.doc.createEvent("Event"); e.initEvent(next._trigger, true, true); next.dispatchEvent(e); } } this._clear(); } else if (isKeyIn(key, "ESCAPE")) { // Cancel and blur ourselves. // Now we don't want to suggest anything as we are moving out. this._preventSuggestions = true; // Close the popup if open if (this.popup && this.popup.isOpen) { this._hideAutocompletePopup(); } prevent = true; this.cancelled = true; this._apply(); this._clear(); event.stopPropagation(); } else if (isKeyIn(key, "SPACE")) { // No need for leading spaces here. This is particularly // noticable when adding a property: it's very natural to type // <name>: (which advances to the next property) then spacebar. prevent = !input.value; } if (prevent) { event.preventDefault(); } }, _onContextMenu: function (event) { if (this.contextMenu) { this.contextMenu(event); } }, /** * Open the autocomplete popup, adding a custom click handler and classname. * * @param {Number} offset * X-offset relative to the input starting edge. * @param {Number} selectedIndex * The index of the item that should be selected. Use -1 to have no * item selected. */ _openAutocompletePopup: function (offset, selectedIndex) { this.popup.on("popup-click", this._onAutocompletePopupClick); this.popup.openPopup(this.input, offset, 0, selectedIndex); }, /** * Remove the custom classname and click handler and close the autocomplete * popup. */ _hideAutocompletePopup: function () { this.popup.off("popup-click", this._onAutocompletePopupClick); this.popup.hidePopup(); }, /** * Get the increment/decrement step to use for the provided key event. */ _getIncrement: function (event) { const largeIncrement = 100; const mediumIncrement = 10; const smallIncrement = 0.1; let increment = 0; let key = event.keyCode; if (isKeyIn(key, "UP", "PAGE_UP")) { increment = 1; } else if (isKeyIn(key, "DOWN", "PAGE_DOWN")) { increment = -1; } if (event.shiftKey && !event.altKey) { if (isKeyIn(key, "PAGE_UP", "PAGE_DOWN")) { increment *= largeIncrement; } else { increment *= mediumIncrement; } } else if (event.altKey && !event.shiftKey) { increment *= smallIncrement; } return increment; }, /** * Handle the input field's keyup event. */ _onKeyup: function () { this._applied = false; }, /** * Handle changes to the input text. */ _onInput: function () { // Validate the entered value. this._doValidation(); // Update size if we're autosizing. if (this._measurement) { this._updateSize(); } // Call the user's change handler if available. if (this.change) { this.change(this.currentInputValue); } }, /** * Stop propagation on the provided event */ _stopEventPropagation: function (e) { e.stopPropagation(); }, /** * Fire validation callback with current input */ _doValidation: function () { if (this.validate && this.input) { this.validate(this.input.value); } }, /** * Handles displaying suggestions based on the current input. * * @param {Boolean} autoInsert * Pass true to automatically insert the most relevant suggestion. */ _maybeSuggestCompletion: function (autoInsert) { // Input can be null in cases when you intantaneously switch out of it. if (!this.input) { return; } let preTimeoutQuery = this.input.value; // Since we are calling this method from a keypress event handler, the // |input.value| does not include currently typed character. Thus we perform // this method async. this._openPopupTimeout = this.doc.defaultView.setTimeout(() => { if (this._preventSuggestions) { this._preventSuggestions = false; return; } if (this.contentType == CONTENT_TYPES.PLAIN_TEXT) { return; } if (!this.input) { return; } let input = this.input; // The length of input.value should be increased by 1 if (input.value.length - preTimeoutQuery.length > 1) { return; } let query = input.value.slice(0, input.selectionStart); let startCheckQuery = query; if (query == null) { return; } // If nothing is selected and there is a word (\w) character after the cursor, do // not autocomplete. if (input.selectionStart == input.selectionEnd && input.selectionStart < input.value.length) { let nextChar = input.value.slice(input.selectionStart)[0]; // Check if the next character is a valid word character, no suggestion should be // provided when preceeding a word. if (/[\w-]/.test(nextChar)) { // This emit is mainly to make the test flow simpler. this.emit("after-suggest", "nothing to autocomplete"); return; } } let list = []; if (this.contentType == CONTENT_TYPES.CSS_PROPERTY) { list = this._getCSSPropertyList(); } else if (this.contentType == CONTENT_TYPES.CSS_VALUE) { // Get the last query to be completed before the caret. let match = /([^\s,.\/]+$)/.exec(query); if (match) { startCheckQuery = match[0]; } else { startCheckQuery = ""; } list = ["!important", ...this._getCSSValuesForPropertyName(this.property.name)]; if (query == "") { // Do not suggest '!important' without any manually typed character. list.splice(0, 1); } } else if (this.contentType == CONTENT_TYPES.CSS_MIXED && /^\s*style\s*=/.test(query)) { // Check if the style attribute is closed before the selection. let styleValue = query.replace(/^\s*style\s*=\s*/, ""); // Look for a quote matching the opening quote (single or double). if (/^("[^"]*"|'[^']*')/.test(styleValue)) { // This emit is mainly to make the test flow simpler. this.emit("after-suggest", "nothing to autocomplete"); return; } // Detecting if cursor is at property or value; let match = query.match(/([:;"'=]?)\s*([^"';:=]+)?$/); if (match && match.length >= 2) { if (match[1] == ":") { // We are in CSS value completion let propertyName = query.match(/[;"'=]\s*([^"';:= ]+)\s*:\s*[^"';:=]*$/)[1]; list = ["!important;", ...this._getCSSValuesForPropertyName(propertyName)]; let matchLastQuery = /([^\s,.\/]+$)/.exec(match[2] || ""); if (matchLastQuery) { startCheckQuery = matchLastQuery[0]; } else { startCheckQuery = ""; } if (!match[2]) { // Don't suggest '!important' without any manually typed character list.splice(0, 1); } } else if (match[1]) { // We are in CSS property name completion list = this._getCSSPropertyList(); startCheckQuery = match[2]; } if (startCheckQuery == null) { // This emit is mainly to make the test flow simpler. this.emit("after-suggest", "nothing to autocomplete"); return; } } } if (!this.popup) { // This emit is mainly to make the test flow simpler. this.emit("after-suggest", "no popup"); return; } let finalList = []; let length = list.length; for (let i = 0, count = 0; i < length && count < MAX_POPUP_ENTRIES; i++) { if (startCheckQuery != null && list[i].startsWith(startCheckQuery)) { count++; finalList.push({ preLabel: startCheckQuery, label: list[i] }); } else if (count > 0) { // Since count was incremented, we had already crossed the entries // which would have started with query, assuming that list is sorted. break; } else if (startCheckQuery != null && list[i][0] > startCheckQuery[0]) { // We have crossed all possible matches alphabetically. break; } } // Sort items starting with [a-z0-9] first, to make sure vendor-prefixed // values and "!important" are suggested only after standard values. finalList.sort((item1, item2) => { // Get the expected alphabetical comparison between the items. let comparison = item1.label.localeCompare(item2.label); if (/^\w/.test(item1.label) != /^\w/.test(item2.label)) { // One starts with [a-z0-9], one does not: flip the comparison. comparison = -1 * comparison; } return comparison; }); let index = 0; if (startCheckQuery) { // Only select a "best" suggestion when the user started a query. let cssValues = finalList.map(item => item.label); index = findMostRelevantCssPropertyIndex(cssValues); } // Insert the most relevant item from the final list as the input value. if (autoInsert && finalList[index]) { let item = finalList[index].label; input.value = query + item.slice(startCheckQuery.length) + input.value.slice(query.length); input.setSelectionRange(query.length, query.length + item.length - startCheckQuery.length); this._updateSize(); } // Display the list of suggestions if there are more than one. if (finalList.length > 1) { // Calculate the popup horizontal offset. let indent = this.input.selectionStart - startCheckQuery.length; let offset = indent * this.inputCharDimensions.width; offset = this._isSingleLine() ? offset : 0; // Select the most relevantItem if autoInsert is allowed let selectedIndex = autoInsert ? index : -1; // Open the suggestions popup. this.popup.setItems(finalList); this._openAutocompletePopup(offset, selectedIndex); } else { this._hideAutocompletePopup(); } // This emit is mainly for the purpose of making the test flow simpler. this.emit("after-suggest"); this._doValidation(); }, 0); }, /** * Check if the current input is displaying more than one line of text. * * @return {Boolean} true if the input has a single line of text */ _isSingleLine: function () { let inputRect = this.input.getBoundingClientRect(); return inputRect.height < 2 * this.inputCharDimensions.height; }, /** * Returns the list of CSS properties to use for the autocompletion. This * method is overridden by tests in order to use mocked suggestion lists. * * @return {Array} array of CSS property names (Strings) */ _getCSSPropertyList: function () { return this.cssProperties.getNames().sort(); }, /** * Returns a list of CSS values valid for a provided property name to use for * the autocompletion. This method is overridden by tests in order to use * mocked suggestion lists. * * @param {String} propertyName * @return {Array} array of CSS property values (Strings) */ _getCSSValuesForPropertyName: function (propertyName) { return this.cssProperties.getValues(propertyName); }, }; /** * Copy text-related styles from one element to another. */ function copyTextStyles(from, to) { let win = from.ownerDocument.defaultView; let style = win.getComputedStyle(from); let getCssText = name => style.getPropertyCSSValue(name).cssText; to.style.fontFamily = getCssText("font-family"); to.style.fontSize = getCssText("font-size"); to.style.fontWeight = getCssText("font-weight"); to.style.fontStyle = getCssText("font-style"); } /** * Copy all styles which could have an impact on the element size. */ function copyAllStyles(from, to) { let win = from.ownerDocument.defaultView; let style = win.getComputedStyle(from); let getCssText = name => style.getPropertyCSSValue(name).cssText; copyTextStyles(from, to); to.style.lineHeight = getCssText("line-height"); // If box-sizing is set to border-box, box model styles also need to be // copied. let boxSizing = getCssText("box-sizing"); if (boxSizing === "border-box") { to.style.boxSizing = boxSizing; copyBoxModelStyles(from, to); } } /** * Copy box model styles that can impact width and height measurements when box- * sizing is set to "border-box" instead of "content-box". * * @param {DOMNode} from * the element from which styles are copied * @param {DOMNode} to * the element on which copied styles are applied */ function copyBoxModelStyles(from, to) { let win = from.ownerDocument.defaultView; let style = win.getComputedStyle(from); let getCssText = name => style.getPropertyCSSValue(name).cssText; // Copy all paddings. to.style.paddingTop = getCssText("padding-top"); to.style.paddingRight = getCssText("padding-right"); to.style.paddingBottom = getCssText("padding-bottom"); to.style.paddingLeft = getCssText("padding-left"); // Copy border styles. to.style.borderTopStyle = getCssText("border-top-style"); to.style.borderRightStyle = getCssText("border-right-style"); to.style.borderBottomStyle = getCssText("border-bottom-style"); to.style.borderLeftStyle = getCssText("border-left-style"); // Copy border widths. to.style.borderTopWidth = getCssText("border-top-width"); to.style.borderRightWidth = getCssText("border-right-width"); to.style.borderBottomWidth = getCssText("border-bottom-width"); to.style.borderLeftWidth = getCssText("border-left-width"); } /** * Trigger a focus change similar to pressing tab/shift-tab. */ function moveFocus(win, direction) { return focusManager.moveFocus(win, null, direction, 0); }