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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/extensions/manifest_handlers/theme_handler.h"
#include "base/file_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/common/extensions/extension_manifest_constants.h"
#include "chrome/common/extensions/manifest.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
namespace extensions {
namespace keys = extensions::manifest_keys;
namespace errors = extension_manifest_errors;
namespace {
bool LoadImages(const base::DictionaryValue* theme_value,
string16* error,
ThemeInfo* theme_info) {
const base::DictionaryValue* images_value = NULL;
if (theme_value->GetDictionary(keys::kThemeImages, &images_value)) {
// Validate that the images are all strings.
for (base::DictionaryValue::Iterator iter(*images_value); !iter.IsAtEnd();
iter.Advance()) {
// The value may be a dictionary of scales and files paths.
// Or the value may be a file path, in which case a scale
// of 100% is assumed.
if (iter.value().IsType(base::Value::TYPE_DICTIONARY)) {
const base::DictionaryValue* inner_value = NULL;
if (iter.value().GetAsDictionary(&inner_value)) {
for (base::DictionaryValue::Iterator inner_iter(*inner_value);
!inner_iter.IsAtEnd(); inner_iter.Advance()) {
if (!inner_iter.value().IsType(base::Value::TYPE_STRING)) {
*error = ASCIIToUTF16(errors::kInvalidThemeImages);
return false;
}
}
} else {
*error = ASCIIToUTF16(errors::kInvalidThemeImages);
return false;
}
} else if (!iter.value().IsType(base::Value::TYPE_STRING)) {
*error = ASCIIToUTF16(errors::kInvalidThemeImages);
return false;
}
}
theme_info->theme_images_.reset(images_value->DeepCopy());
}
return true;
}
bool LoadColors(const base::DictionaryValue* theme_value,
string16* error,
ThemeInfo* theme_info) {
const base::DictionaryValue* colors_value = NULL;
if (theme_value->GetDictionary(keys::kThemeColors, &colors_value)) {
// Validate that the colors are RGB or RGBA lists.
for (base::DictionaryValue::Iterator iter(*colors_value); !iter.IsAtEnd();
iter.Advance()) {
const base::ListValue* color_list = NULL;
double alpha = 0.0;
int color = 0;
// The color must be a list...
if (!iter.value().GetAsList(&color_list) ||
// ... and either 3 items (RGB) or 4 (RGBA).
((color_list->GetSize() != 3) &&
((color_list->GetSize() != 4) ||
// For RGBA, the fourth item must be a real or int alpha value.
// Note that GetDouble() can get an integer value.
!color_list->GetDouble(3, &alpha))) ||
// For both RGB and RGBA, the first three items must be ints (R,G,B).
!color_list->GetInteger(0, &color) ||
!color_list->GetInteger(1, &color) ||
!color_list->GetInteger(2, &color)) {
*error = ASCIIToUTF16(errors::kInvalidThemeColors);
return false;
}
}
theme_info->theme_colors_.reset(colors_value->DeepCopy());
}
return true;
}
bool LoadTints(const base::DictionaryValue* theme_value,
string16* error,
ThemeInfo* theme_info) {
const base::DictionaryValue* tints_value = NULL;
if (!theme_value->GetDictionary(keys::kThemeTints, &tints_value))
return true;
// Validate that the tints are all reals.
for (base::DictionaryValue::Iterator iter(*tints_value); !iter.IsAtEnd();
iter.Advance()) {
const base::ListValue* tint_list = NULL;
double v = 0.0;
if (!iter.value().GetAsList(&tint_list) ||
tint_list->GetSize() != 3 ||
!tint_list->GetDouble(0, &v) ||
!tint_list->GetDouble(1, &v) ||
!tint_list->GetDouble(2, &v)) {
*error = ASCIIToUTF16(errors::kInvalidThemeTints);
return false;
}
}
theme_info->theme_tints_.reset(tints_value->DeepCopy());
return true;
}
bool LoadDisplayProperties(const base::DictionaryValue* theme_value,
string16* error,
ThemeInfo* theme_info) {
const base::DictionaryValue* display_properties_value = NULL;
if (theme_value->GetDictionary(keys::kThemeDisplayProperties,
&display_properties_value)) {
theme_info->theme_display_properties_.reset(
display_properties_value->DeepCopy());
}
return true;
}
const ThemeInfo* GetInfo(const Extension* extension) {
return static_cast<ThemeInfo*>(extension->GetManifestData(keys::kTheme));
}
} // namespace
ThemeInfo::ThemeInfo() {
}
ThemeInfo::~ThemeInfo() {
}
// static
const base::DictionaryValue* ThemeInfo::GetImages(const Extension* extension) {
const ThemeInfo* theme_info = GetInfo(extension);
return theme_info ? theme_info->theme_images_.get() : NULL;
}
// static
const base::DictionaryValue* ThemeInfo::GetColors(const Extension* extension) {
const ThemeInfo* theme_info = GetInfo(extension);
return theme_info ? theme_info->theme_colors_.get() : NULL;
}
// static
const base::DictionaryValue* ThemeInfo::GetTints(const Extension* extension) {
const ThemeInfo* theme_info = GetInfo(extension);
return theme_info ? theme_info->theme_tints_.get() : NULL;
}
// static
const base::DictionaryValue* ThemeInfo::GetDisplayProperties(
const Extension* extension) {
const ThemeInfo* theme_info = GetInfo(extension);
return theme_info ? theme_info->theme_display_properties_.get() : NULL;
}
ThemeHandler::ThemeHandler() {
}
ThemeHandler::~ThemeHandler() {
}
bool ThemeHandler::Parse(Extension* extension, string16* error) {
const base::DictionaryValue* theme_value = NULL;
if (!extension->manifest()->GetDictionary(keys::kTheme, &theme_value)) {
*error = ASCIIToUTF16(errors::kInvalidTheme);
return false;
}
scoped_ptr<ThemeInfo> theme_info(new ThemeInfo);
if (!LoadImages(theme_value, error, theme_info.get()))
return false;
if (!LoadColors(theme_value, error, theme_info.get()))
return false;
if (!LoadTints(theme_value, error, theme_info.get()))
return false;
if (!LoadDisplayProperties(theme_value, error, theme_info.get()))
return false;
extension->SetManifestData(keys::kTheme, theme_info.release());
return true;
}
bool ThemeHandler::Validate(const Extension* extension,
std::string* error,
std::vector<InstallWarning>* warnings) const {
// Validate that theme images exist.
if (extension->is_theme()) {
const base::DictionaryValue* images_value =
extensions::ThemeInfo::GetImages(extension);
if (images_value) {
for (base::DictionaryValue::Iterator iter(*images_value); !iter.IsAtEnd();
iter.Advance()) {
std::string val;
if (iter.value().GetAsString(&val)) {
base::FilePath image_path = extension->path().Append(
base::FilePath::FromUTF8Unsafe(val));
if (!base::PathExists(image_path)) {
*error =
l10n_util::GetStringFUTF8(IDS_EXTENSION_INVALID_IMAGE_PATH,
image_path.LossyDisplayName());
return false;
}
}
}
}
}
return true;
}
const std::vector<std::string> ThemeHandler::Keys() const {
return SingleKey(keys::kTheme);
}
} // namespace extensions
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