gecko-dev/devtools/client/shared/inplace-editor.js
J. Ryan Stinnett 30b2b7ce44 Bug 1271084 - Apply ESLint autofixes to ignored /devtools files. r=tromey
For simple rules like function spacing, we can auto-fix these across the code
base so they are followed in a consistent way.

To generate this patch, I ran:

./mach eslint devtools --no-ignore --fix

After this, I reverted any changes to third party files that we really do want
to ignore.

MozReview-Commit-ID: 6Q8BApkAW20
2016-05-18 12:49:23 -05:00

1540 lines
49 KiB
JavaScript

/* -*- 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 {Ci, Cu, Cc} = require("chrome");
const Services = require("Services");
const HTML_NS = "http://www.w3.org/1999/xhtml";
const CONTENT_TYPES = {
PLAIN_TEXT: 0,
CSS_VALUE: 1,
CSS_MIXED: 2,
CSS_PROPERTY: 3,
};
const AUTOCOMPLETE_POPUP_CLASSNAME = "inplace-editor-autocomplete-popup";
// The limit of 500 autocomplete suggestions should not be reached but is kept
// for safety.
const MAX_POPUP_ENTRIES = 500;
const FOCUS_FORWARD = Ci.nsIFocusManager.MOVEFOCUS_FORWARD;
const FOCUS_BACKWARD = Ci.nsIFocusManager.MOVEFOCUS_BACKWARD;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://devtools/shared/event-emitter.js");
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 nsIDOMKeyEvent.
*
* @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 === Ci.nsIDOMKeyEvent["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 nsIFocusManager.MOVEFOCUS_FORWARD,
* nsIFocusManager.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.
* {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
*/
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;
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.change = options.change;
this.done = options.done;
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._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.doc.defaultView.addEventListener("blur", this._onWindowBlur, false);
this.validate = options.validate;
if (this.validate) {
this.input.addEventListener("keyup", this._onKeyup, false);
}
this._updateSize();
if (options.start) {
options.start(this, event);
}
EventEmitter.decorate(this);
}
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.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) {
const reSplitCSS = /(url\("?[^"\)]+"?\)?)|(rgba?\([^)]*\)?)|(hsla?\([^)]*\)?)|(#[\dA-Fa-f]+)|(-?\d*\.?\d+(%|[a-z]{1,4})?)|"([^"]*)"?|'([^']*)'?|([^,\s\/!\(\)]+)|(!(.*)?)/;
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._panel.removeEventListener("popuphidden", onPopupHidden);
this.doc.defaultView.setTimeout(()=> {
input.focus();
this.emit("after-suggest");
}, 0);
};
this.popup._panel.addEventListener("popuphidden", 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, "HOME", "END", "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")) {
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();
}
},
/**
* 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._panel.classList.add(AUTOCOMPLETE_POPUP_CLASSNAME);
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._panel.classList.remove(AUTOCOMPLETE_POPUP_CLASSNAME);
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 non-space character after the
// cursor, do not autocomplete.
if (input.selectionStart == input.selectionEnd &&
input.selectionStart < input.value.length &&
input.value.slice(input.selectionStart)[0] != " ") {
// 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 = CSSPropertyList;
} 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",
...domUtils.getCSSValuesForProperty(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;",
...domUtils.getCSSValuesForProperty(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 = CSSPropertyList;
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 - query.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;
},
};
/**
* 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);
}
XPCOMUtils.defineLazyGetter(this, "focusManager", function () {
return Services.focus;
});
XPCOMUtils.defineLazyGetter(this, "CSSPropertyList", function () {
return domUtils.getCSSPropertyNames(domUtils.INCLUDE_ALIASES).sort();
});
XPCOMUtils.defineLazyGetter(this, "domUtils", function () {
return Cc["@mozilla.org/inspector/dom-utils;1"].getService(Ci.inIDOMUtils);
});