gecko/browser/devtools/styleeditor/StyleEditorUI.jsm

590 lines
17 KiB
JavaScript

/* vim:set ts=2 sw=2 sts=2 et: */
/* 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";
this.EXPORTED_SYMBOLS = ["StyleEditorUI"];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/PluralForm.jsm");
Cu.import("resource://gre/modules/NetUtil.jsm");
let promise = Cu.import("resource://gre/modules/commonjs/sdk/core/promise.js").Promise;
Cu.import("resource:///modules/devtools/shared/event-emitter.js");
Cu.import("resource:///modules/devtools/gDevTools.jsm");
Cu.import("resource:///modules/devtools/StyleEditorUtil.jsm");
Cu.import("resource:///modules/devtools/SplitView.jsm");
Cu.import("resource:///modules/devtools/StyleSheetEditor.jsm");
const require = Cu.import("resource://gre/modules/devtools/Loader.jsm", {}).devtools.require;
const { PrefObserver, PREF_ORIG_SOURCES } = require("devtools/styleeditor/utils");
const LOAD_ERROR = "error-load";
const STYLE_EDITOR_TEMPLATE = "stylesheet";
/**
* StyleEditorUI is controls and builds the UI of the Style Editor, including
* maintaining a list of editors for each stylesheet on a debuggee.
*
* Emits events:
* 'editor-added': A new editor was added to the UI
* 'editor-selected': An editor was selected
* 'error': An error occured
*
* @param {StyleEditorFront} debuggee
* Client-side front for interacting with the page's stylesheets
* @param {Target} target
* Interface for the page we're debugging
* @param {Document} panelDoc
* Document of the toolbox panel to populate UI in.
*/
function StyleEditorUI(debuggee, target, panelDoc) {
EventEmitter.decorate(this);
this._debuggee = debuggee;
this._target = target;
this._panelDoc = panelDoc;
this._window = this._panelDoc.defaultView;
this._root = this._panelDoc.getElementById("style-editor-chrome");
this.editors = [];
this.selectedEditor = null;
this._updateSourcesLabel = this._updateSourcesLabel.bind(this);
this._onStyleSheetCreated = this._onStyleSheetCreated.bind(this);
this._onNewDocument = this._onNewDocument.bind(this);
this._clear = this._clear.bind(this);
this._onError = this._onError.bind(this);
this._prefObserver = new PrefObserver("devtools.styleeditor.");
this._prefObserver.on(PREF_ORIG_SOURCES, this._onNewDocument);
}
StyleEditorUI.prototype = {
/**
* Get whether any of the editors have unsaved changes.
*
* @return boolean
*/
get isDirty() {
if (this._markedDirty === true) {
return true;
}
return this.editors.some((editor) => {
return editor.sourceEditor && !editor.sourceEditor.isClean();
});
},
/*
* Mark the style editor as having or not having unsaved changes.
*/
set isDirty(value) {
this._markedDirty = value;
},
/*
* Index of selected stylesheet in document.styleSheets
*/
get selectedStyleSheetIndex() {
return this.selectedEditor ?
this.selectedEditor.styleSheet.styleSheetIndex : -1;
},
/**
* Initiates the style editor ui creation and the inspector front to get
* reference to the walker.
*/
initialize: function() {
let toolbox = gDevTools.getToolbox(this._target);
return toolbox.initInspector().then(() => {
this._walker = toolbox.walker;
}).then(() => this.createUI())
.then(() => this._debuggee.getStyleSheets())
.then((styleSheets) => {
this._resetStyleSheetList(styleSheets);
this._target.on("will-navigate", this._clear);
this._target.on("navigate", this._onNewDocument);
});
},
/**
* Build the initial UI and wire buttons with event handlers.
*/
createUI: function() {
let viewRoot = this._root.parentNode.querySelector(".splitview-root");
this._view = new SplitView(viewRoot);
wire(this._view.rootElement, ".style-editor-newButton", function onNew() {
this._debuggee.addStyleSheet(null).then(this._onStyleSheetCreated);
}.bind(this));
wire(this._view.rootElement, ".style-editor-importButton", function onImport() {
this._importFromFile(this._mockImportFile || null, this._window);
}.bind(this));
this._contextMenu = this._panelDoc.getElementById("sidebar-context");
this._contextMenu.addEventListener("popupshowing",
this._updateSourcesLabel);
this._sourcesItem = this._panelDoc.getElementById("context-origsources");
this._sourcesItem.addEventListener("command",
this._toggleOrigSources);
},
/**
* Update text of context menu option to reflect whether we're showing
* original sources (e.g. Sass files) or not.
*/
_updateSourcesLabel: function() {
let string = "showOriginalSources";
if (Services.prefs.getBoolPref(PREF_ORIG_SOURCES)) {
string = "showCSSSources";
}
this._sourcesItem.setAttribute("label", _(string + ".label"));
this._sourcesItem.setAttribute("accesskey", _(string + ".accesskey"));
},
/**
* Refresh editors to reflect the stylesheets in the document.
*
* @param {string} event
* Event name
* @param {StyleSheet} styleSheet
* StyleSheet object for new sheet
*/
_onNewDocument: function() {
this._debuggee.getStyleSheets().then((styleSheets) => {
this._resetStyleSheetList(styleSheets);
})
},
/**
* Remove all editors and add loading indicator.
*/
_clear: function() {
// remember selected sheet and line number for next load
if (this.selectedEditor && this.selectedEditor.sourceEditor) {
let href = this.selectedEditor.styleSheet.href;
let {line, ch} = this.selectedEditor.sourceEditor.getCursor();
this._styleSheetToSelect = {
href: href,
line: line,
col: ch
};
}
this._clearStyleSheetEditors();
this._view.removeAll();
this.selectedEditor = null;
this._root.classList.add("loading");
},
/**
* Add editors for all the given stylesheets to the UI.
*
* @param {array} styleSheets
* Array of StyleSheetFront
*/
_resetStyleSheetList: function(styleSheets) {
this._clear();
for (let sheet of styleSheets) {
this._addStyleSheet(sheet);
}
this._root.classList.remove("loading");
this.emit("stylesheets-reset");
},
/**
* Add an editor for this stylesheet. Add editors for its original sources
* instead (e.g. Sass sources), if applicable.
*
* @param {StyleSheetFront} styleSheet
* Style sheet to add to style editor
*/
_addStyleSheet: function(styleSheet) {
let editor = this._addStyleSheetEditor(styleSheet);
if (!Services.prefs.getBoolPref(PREF_ORIG_SOURCES)) {
return;
}
styleSheet.getOriginalSources().then((sources) => {
if (sources && sources.length) {
this._removeStyleSheetEditor(editor);
sources.forEach((source) => {
// set so the first sheet will be selected, even if it's a source
source.styleSheetIndex = styleSheet.styleSheetIndex;
this._addStyleSheetEditor(source);
});
}
});
},
/**
* Add a new editor to the UI for a source.
*
* @param {StyleSheet} styleSheet
* Object representing stylesheet
* @param {nsIfile} file
* Optional file object that sheet was imported from
* @param {Boolean} isNew
* Optional if stylesheet is a new sheet created by user
*/
_addStyleSheetEditor: function(styleSheet, file, isNew) {
let editor =
new StyleSheetEditor(styleSheet, this._window, file, isNew, this._walker);
editor.on("property-change", this._summaryChange.bind(this, editor));
editor.on("style-applied", this._summaryChange.bind(this, editor));
editor.on("error", this._onError);
this.editors.push(editor);
editor.fetchSource(this._sourceLoaded.bind(this, editor));
return editor;
},
/**
* Import a style sheet from file and asynchronously create a
* new stylesheet on the debuggee for it.
*
* @param {mixed} file
* Optional nsIFile or filename string.
* If not set a file picker will be shown.
* @param {nsIWindow} parentWindow
* Optional parent window for the file picker.
*/
_importFromFile: function(file, parentWindow) {
let onFileSelected = function(file) {
if (!file) {
// nothing selected
return;
}
NetUtil.asyncFetch(file, (stream, status) => {
if (!Components.isSuccessCode(status)) {
this.emit("error", LOAD_ERROR);
return;
}
let source = NetUtil.readInputStreamToString(stream, stream.available());
stream.close();
this._debuggee.addStyleSheet(source).then((styleSheet) => {
this._onStyleSheetCreated(styleSheet, file);
});
});
}.bind(this);
showFilePicker(file, false, parentWindow, onFileSelected);
},
/**
* When a new or imported stylesheet has been added to the document.
* Add an editor for it.
*/
_onStyleSheetCreated: function(styleSheet, file) {
this._addStyleSheetEditor(styleSheet, file, true);
},
/**
* Forward any error from a stylesheet.
*
* @param {string} event
* Event name
* @param {string} errorCode
* Code represeting type of error
* @param {string} message
* The full error message
*/
_onError: function(event, errorCode, message) {
this.emit("error", errorCode, message);
},
/**
* Toggle the original sources pref.
*/
_toggleOrigSources: function() {
let isEnabled = Services.prefs.getBoolPref(PREF_ORIG_SOURCES);
Services.prefs.setBoolPref(PREF_ORIG_SOURCES, !isEnabled);
},
/**
* Remove a particular stylesheet editor from the UI
*
* @param {StyleSheetEditor} editor
* The editor to remove.
*/
_removeStyleSheetEditor: function(editor) {
if (editor.summary) {
this._view.removeItem(editor.summary);
}
else {
let self = this;
this.on("editor-added", function onAdd(event, added) {
if (editor == added) {
self.off("editor-added", onAdd);
self._view.removeItem(editor.summary);
}
})
}
editor.destroy();
this.editors.splice(this.editors.indexOf(editor), 1);
},
/**
* Clear all the editors from the UI.
*/
_clearStyleSheetEditors: function() {
for (let editor of this.editors) {
editor.destroy();
}
this.editors = [];
},
/**
* Called when a StyleSheetEditor's source has been fetched. Create a
* summary UI for the editor.
*
* @param {StyleSheetEditor} editor
* Editor to create UI for.
*/
_sourceLoaded: function(editor) {
// add new sidebar item and editor to the UI
this._view.appendTemplatedItem(STYLE_EDITOR_TEMPLATE, {
data: {
editor: editor
},
disableAnimations: this._alwaysDisableAnimations,
ordinal: editor.styleSheet.styleSheetIndex,
onCreate: function(summary, details, data) {
let editor = data.editor;
editor.summary = summary;
wire(summary, ".stylesheet-enabled", function onToggleDisabled(event) {
event.stopPropagation();
event.target.blur();
editor.toggleDisabled();
});
wire(summary, ".stylesheet-name", {
events: {
"keypress": function onStylesheetNameActivate(aEvent) {
if (aEvent.keyCode == aEvent.DOM_VK_RETURN) {
this._view.activeSummary = summary;
}
}.bind(this)
}
});
wire(summary, ".stylesheet-saveButton", function onSaveButton(event) {
event.stopPropagation();
event.target.blur();
editor.saveToFile(editor.savedFile);
});
this._updateSummaryForEditor(editor, summary);
summary.addEventListener("focus", function onSummaryFocus(event) {
if (event.target == summary) {
// autofocus the stylesheet name
summary.querySelector(".stylesheet-name").focus();
}
}, false);
// autofocus if it's a new user-created stylesheet
if (editor.isNew) {
this._selectEditor(editor);
}
if (this._styleSheetToSelect
&& this._styleSheetToSelect.href == editor.styleSheet.href) {
this.switchToSelectedSheet();
}
// If this is the first stylesheet and there is no pending request to
// select a particular style sheet, select this sheet.
if (!this.selectedEditor && !this._styleSheetBoundToSelect
&& editor.styleSheet.styleSheetIndex == 0) {
this._selectEditor(editor);
}
this.emit("editor-added", editor);
}.bind(this),
onShow: function(summary, details, data) {
let editor = data.editor;
this.selectedEditor = editor;
if (!editor.sourceEditor) {
// only initialize source editor when we switch to this view
let inputElement = details.querySelector(".stylesheet-editor-input");
editor.load(inputElement);
}
editor.onShow();
this.emit("editor-selected", editor);
}.bind(this)
});
},
/**
* Switch to the editor that has been marked to be selected.
*/
switchToSelectedSheet: function() {
let sheet = this._styleSheetToSelect;
for each (let editor in this.editors) {
if (editor.styleSheet.href == sheet.href) {
// The _styleSheetBoundToSelect will always hold the latest pending
// requested style sheet (with line and column) which is not yet
// selected by the source editor. Only after we select that particular
// editor and go the required line and column, it will become null.
this._styleSheetBoundToSelect = this._styleSheetToSelect;
this._selectEditor(editor, sheet.line, sheet.col);
this._styleSheetToSelect = null;
return;
}
}
},
/**
* Select an editor in the UI.
*
* @param {StyleSheetEditor} editor
* Editor to switch to.
* @param {number} line
* Line number to jump to
* @param {number} col
* Column number to jump to
*/
_selectEditor: function(editor, line, col) {
line = line || 0;
col = col || 0;
editor.getSourceEditor().then(() => {
editor.sourceEditor.setCursor({line: line, ch: col});
this._styleSheetBoundToSelect = null;
});
this.getEditorSummary(editor).then((summary) => {
this._view.activeSummary = summary;
})
},
getEditorSummary: function(editor) {
if (editor.summary) {
return promise.resolve(editor.summary);
}
let deferred = promise.defer();
let self = this;
this.on("editor-added", function onAdd(e, selected) {
if (selected == editor) {
self.off("editor-added", onAdd);
deferred.resolve(editor.summary);
}
});
return deferred.promise;
},
/**
* selects a stylesheet and optionally moves the cursor to a selected line
*
* @param {string} [href]
* Href of stylesheet that should be selected. If a stylesheet is not passed
* and the editor is not initialized we focus the first stylesheet. If
* a stylesheet is not passed and the editor is initialized we ignore
* the call.
* @param {Number} [line]
* Line to which the caret should be moved (zero-indexed).
* @param {Number} [col]
* Column to which the caret should be moved (zero-indexed).
*/
selectStyleSheet: function(href, line, col) {
this._styleSheetToSelect = {
href: href,
line: line,
col: col,
};
/* Switch to the editor for this sheet, if it exists yet.
Otherwise each editor will be checked when it's created. */
this.switchToSelectedSheet();
},
/**
* Handler for an editor's 'property-changed' event.
* Update the summary in the UI.
*
* @param {StyleSheetEditor} editor
* Editor for which a property has changed
*/
_summaryChange: function(editor) {
this._updateSummaryForEditor(editor);
},
/**
* Update split view summary of given StyleEditor instance.
*
* @param {StyleSheetEditor} editor
* @param {DOMElement} summary
* Optional item's summary element to update. If none, item corresponding
* to passed editor is used.
*/
_updateSummaryForEditor: function(editor, summary) {
summary = summary || editor.summary;
if (!summary) {
return;
}
let ruleCount = "-";
if (editor.styleSheet.ruleCount !== undefined) {
ruleCount = editor.styleSheet.ruleCount;
}
var flags = [];
if (editor.styleSheet.disabled) {
flags.push("disabled");
}
if (editor.unsaved) {
flags.push("unsaved");
}
this._view.setItemClassName(summary, flags.join(" "));
let label = summary.querySelector(".stylesheet-name > label");
label.setAttribute("value", editor.friendlyName);
text(summary, ".stylesheet-title", editor.styleSheet.title || "");
text(summary, ".stylesheet-rule-count",
PluralForm.get(ruleCount, _("ruleCount.label")).replace("#1", ruleCount));
text(summary, ".stylesheet-error-message", editor.errorMessage);
},
destroy: function() {
this._clearStyleSheetEditors();
this._prefObserver.off(PREF_ORIG_SOURCES, this._onNewDocument);
this._prefObserver.destroy();
}
}