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// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
/* 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
/* import-globals-from ../../content/preferencesBindings.js */
var FontBuilder = {
_enumerator: null,
get enumerator() {
if (!this._enumerator) {
this._enumerator = Cc["@mozilla.org/gfx/fontenumerator;1"].createInstance(
Ci.nsIFontEnumerator
);
}
return this._enumerator;
},
_allFonts: null,
_langGroupSupported: false,
async buildFontList(aLanguage, aFontType, aMenuList) {
// Remove the original <menupopup>
if (aMenuList.menupopup) {
aMenuList.menupopup.remove();
}
let defaultFont = null;
// Load Font Lists
let fonts = await this.enumerator.EnumerateFontsAsync(aLanguage, aFontType);
if (fonts.length) {
defaultFont = this.enumerator.getDefaultFont(aLanguage, aFontType);
} else {
fonts = await this.enumerator.EnumerateFontsAsync(aLanguage, "");
if (fonts.length) {
defaultFont = this.enumerator.getDefaultFont(aLanguage, "");
}
}
if (!this._allFonts) {
this._allFonts = await this.enumerator.EnumerateAllFontsAsync({});
}
// Build the UI for the Default Font and Fonts for this CSS type.
const popup = document.createXULElement("menupopup");
let separator;
if (fonts.length) {
let menuitem = document.createXULElement("menuitem");
if (defaultFont) {
document.l10n.setAttributes(menuitem, "fonts-label-default", {
name: defaultFont,
});
} else {
document.l10n.setAttributes(menuitem, "fonts-label-default-unnamed");
}
menuitem.setAttribute("value", ""); // Default Font has a blank value
popup.appendChild(menuitem);
separator = document.createXULElement("menuseparator");
popup.appendChild(separator);
for (let font of fonts) {
menuitem = document.createXULElement("menuitem");
menuitem.setAttribute("value", font);
menuitem.setAttribute("label", font);
popup.appendChild(menuitem);
}
}
// Build the UI for the remaining fonts.
if (this._allFonts.length > fonts.length) {
this._langGroupSupported = true;
// Both lists are sorted, and the Fonts-By-Type list is a subset of the
// All-Fonts list, so walk both lists side-by-side, skipping values we've
// already created menu items for.
let builtItem = separator ? separator.nextSibling : popup.firstChild;
let builtItemValue = builtItem ? builtItem.getAttribute("value") : null;
separator = document.createXULElement("menuseparator");
popup.appendChild(separator);
for (let font of this._allFonts) {
if (font != builtItemValue) {
const menuitem = document.createXULElement("menuitem");
menuitem.setAttribute("value", font);
menuitem.setAttribute("label", font);
popup.appendChild(menuitem);
} else {
builtItem = builtItem.nextSibling;
builtItemValue = builtItem ? builtItem.getAttribute("value") : null;
}
}
}
aMenuList.appendChild(popup);
},
readFontSelection(aElement) {
// Determine the appropriate value to select, for the following cases:
// - there is no setting
// - the font selected by the user is no longer present (e.g. deleted from
// fonts folder)
const preference = Preferences.get(aElement.getAttribute("preference"));
if (preference.value) {
const fontItems = aElement.getElementsByAttribute(
"value",
preference.value
);
// There is a setting that actually is in the list. Respect it.
if (fontItems.length) {
return undefined;
}
}
// Otherwise, use "default" font of current system which is computed
// with "font.name-list.*". If "font.name.*" is empty string, it means
// "default". So, return empty string in this case.
return "";
},
};