/* 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/. */
"use strict";
const Editor = require(
"resource://devtools/client/shared/sourceeditor/editor.js");
const EventEmitter = require(
"resource://devtools/shared/event-emitter.js");
/**
* A wrapper around the Editor component, that allows editing of HTML.
*
* The main functionality this provides around the Editor is the ability
* to show/hide/position an editor inplace. It only appends once to the
* body, and uses CSS to position the editor. The reason it is done this
* way is that the editor is loaded in an iframe, and calling appendChild
* causes it to reload.
*
* Meant to be embedded inside of an HTML page, as in markup.xhtml.
*
* @param {HTMLDocument} htmlDocument
* The document to attach the editor to. Will also use this
* document as a basis for listening resize events.
*/
function HTMLEditor(htmlDocument) {
this.doc = htmlDocument;
this.container =
this.doc.createElement(
"div");
this.container.className =
"html-editor theme-body";
this.container.style.display =
"none";
this.editorInner =
this.doc.createElement(
"div");
this.editorInner.className =
"html-editor-inner";
this.container.appendChild(
this.editorInner);
this.doc.body.appendChild(
this.container);
this.hide =
this.hide.bind(
this);
this.refresh =
this.refresh.bind(
this);
EventEmitter.decorate(
this);
this.doc.defaultView.addEventListener(
"resize",
this.refresh,
true);
const config = {
mode: Editor.modes.html,
lineWrapping:
true,
styleActiveLine:
false,
extraKeys: {},
theme:
"mozilla markup-view",
};
config.extraKeys[ctrl(
"Enter")] =
this.hide;
config.extraKeys.F2 =
this.hide;
config.extraKeys.Esc =
this.hide.bind(
this,
false);
this.container.addEventListener(
"click",
this.hide);
this.editorInner.addEventListener(
"click", stopPropagation);
this.editor =
new Editor(config);
this.editor.appendToLocalElement(
this.editorInner);
this.hide(
false);
}
HTMLEditor.prototype = {
/**
* Need to refresh position by manually setting CSS values, so this will
* need to be called on resizes and other sizing changes.
*/
refresh() {
const element =
this._attachedElement;
if (element) {
this.container.style.top = element.offsetTop +
"px";
this.container.style.left = element.offsetLeft +
"px";
this.container.style.width = element.offsetWidth +
"px";
this.container.style.height = element.parentNode.offsetHeight +
"px";
this.editor.refresh();
}
},
/**
* Anchor the editor to a particular element.
*
* @param {DOMNode} element
* The element that the editor will be anchored to.
* Should belong to the HTMLDocument passed into the constructor.
*/
_attach(element) {
this._detach();
this._attachedElement = element;
element.classList.add(
"html-editor-container");
this.refresh();
},
/**
* Unanchor the editor from an element.
*/
_detach() {
if (
this._attachedElement) {
this._attachedElement.classList.remove(
"html-editor-container");
this._attachedElement = undefined;
}
},
/**
* Anchor the editor to a particular element, and show the editor.
*
* @param {DOMNode} element
* The element that the editor will be anchored to.
* Should belong to the HTMLDocument passed into the constructor.
* @param {String} text
* Value to set the contents of the editor to
* @param {Function} cb
* The function to call when hiding
*/
show(element, text) {
if (
this._visible) {
return;
}
this._originalValue = text;
this.editor.setText(text);
this._attach(element);
this.container.style.display =
"flex";
this._visible =
true;
this.editor.refresh();
this.editor.focus();
this.editor.clearHistory();
this.emit(
"popupshown");
},
/**
* Hide the editor, optionally committing the changes
*
* @param {Boolean} shouldCommit
* A change will be committed by default. If this param
* strictly equals false, no change will occur.
*/
hide(shouldCommit) {
if (!
this._visible) {
return;
}
this.container.style.display =
"none";
this._detach();
const newValue =
this.editor.getText();
const valueHasChanged =
this._originalValue !== newValue;
const preventCommit = shouldCommit ===
false || !valueHasChanged;
this._originalValue = undefined;
this._visible = undefined;
this.emit(
"popuphidden", !preventCommit, newValue);
},
/**
* Destroy this object and unbind all event handlers
*/
destroy() {
this.doc.defaultView.removeEventListener(
"resize",
this.refresh,
true);
this.container.removeEventListener(
"click",
this.hide);
this.editorInner.removeEventListener(
"click", stopPropagation);
this.hide(
false);
this.container.remove();
this.editor.destroy();
},
};
function ctrl(k) {
return (Services.appinfo.OS ==
"Darwin" ?
"Cmd-" :
"Ctrl-") + k;
}
function stopPropagation(e) {
e.stopPropagation();
}
module.exports = HTMLEditor;