244 lines
8.9 KiB
C++
244 lines
8.9 KiB
C++
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/browser/electron_download_manager_delegate.h"
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#include <string>
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#include <utility>
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#include "base/bind.h"
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#include "base/files/file_util.h"
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#include "base/task/post_task.h"
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#include "chrome/common/pref_names.h"
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#include "components/download/public/common/download_danger_type.h"
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#include "components/prefs/pref_service.h"
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#include "content/public/browser/browser_context.h"
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#include "content/public/browser/browser_thread.h"
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#include "content/public/browser/download_item_utils.h"
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#include "content/public/browser/download_manager.h"
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#include "net/base/filename_util.h"
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#include "shell/browser/api/electron_api_download_item.h"
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#include "shell/browser/electron_browser_context.h"
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#include "shell/browser/javascript_environment.h"
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#include "shell/browser/native_window.h"
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#include "shell/browser/ui/file_dialog.h"
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#include "shell/browser/web_contents_preferences.h"
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#include "shell/common/gin_converters/callback_converter.h"
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#include "shell/common/gin_converters/file_path_converter.h"
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#include "shell/common/options_switches.h"
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namespace electron {
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namespace {
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// Generate default file path to save the download.
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base::FilePath CreateDownloadPath(const GURL& url,
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const std::string& content_disposition,
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const std::string& suggested_filename,
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const std::string& mime_type,
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const base::FilePath& default_download_path) {
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auto generated_name =
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net::GenerateFileName(url, content_disposition, std::string(),
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suggested_filename, mime_type, "download");
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if (!base::PathExists(default_download_path))
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base::CreateDirectory(default_download_path);
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return default_download_path.Append(generated_name);
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}
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} // namespace
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ElectronDownloadManagerDelegate::ElectronDownloadManagerDelegate(
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content::DownloadManager* manager)
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: download_manager_(manager), weak_ptr_factory_(this) {}
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ElectronDownloadManagerDelegate::~ElectronDownloadManagerDelegate() {
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if (download_manager_) {
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DCHECK_EQ(static_cast<content::DownloadManagerDelegate*>(this),
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download_manager_->GetDelegate());
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download_manager_->SetDelegate(nullptr);
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download_manager_ = nullptr;
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}
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}
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void ElectronDownloadManagerDelegate::GetItemSavePath(
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download::DownloadItem* item,
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base::FilePath* path) {
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api::DownloadItem* download = api::DownloadItem::FromDownloadItem(item);
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if (download)
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*path = download->GetSavePath();
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}
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void ElectronDownloadManagerDelegate::GetItemSaveDialogOptions(
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download::DownloadItem* item,
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file_dialog::DialogSettings* options) {
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api::DownloadItem* download = api::DownloadItem::FromDownloadItem(item);
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if (download)
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*options = download->GetSaveDialogOptions();
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}
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void ElectronDownloadManagerDelegate::OnDownloadPathGenerated(
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uint32_t download_id,
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content::DownloadTargetCallback callback,
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const base::FilePath& default_path) {
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DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
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base::ThreadRestrictions::ScopedAllowIO allow_io;
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auto* item = download_manager_->GetDownload(download_id);
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if (!item)
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return;
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NativeWindow* window = nullptr;
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content::WebContents* web_contents =
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content::DownloadItemUtils::GetWebContents(item);
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auto* relay =
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web_contents ? NativeWindowRelay::FromWebContents(web_contents) : nullptr;
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if (relay)
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window = relay->GetNativeWindow();
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// Show save dialog if save path was not set already on item
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base::FilePath path;
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GetItemSavePath(item, &path);
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if (path.empty()) {
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file_dialog::DialogSettings settings;
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GetItemSaveDialogOptions(item, &settings);
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if (!settings.parent_window)
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settings.parent_window = window;
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if (settings.title.empty())
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settings.title = item->GetURL().spec();
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if (settings.default_path.empty())
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settings.default_path = default_path;
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auto* web_preferences = WebContentsPreferences::From(web_contents);
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const bool offscreen =
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!web_preferences || web_preferences->IsEnabled(options::kOffscreen);
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settings.force_detached = offscreen;
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v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
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v8::HandleScope scope(isolate);
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gin_helper::Promise<gin_helper::Dictionary> dialog_promise(isolate);
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auto dialog_callback = base::BindOnce(
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&ElectronDownloadManagerDelegate::OnDownloadSaveDialogDone,
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base::Unretained(this), download_id, std::move(callback));
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ignore_result(dialog_promise.Then(std::move(dialog_callback)));
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file_dialog::ShowSaveDialog(settings, std::move(dialog_promise));
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} else {
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std::move(callback).Run(path,
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download::DownloadItem::TARGET_DISPOSITION_PROMPT,
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download::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
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item->GetMixedContentStatus(), path, base::nullopt,
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download::DOWNLOAD_INTERRUPT_REASON_NONE);
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}
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}
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void ElectronDownloadManagerDelegate::OnDownloadSaveDialogDone(
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uint32_t download_id,
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content::DownloadTargetCallback download_callback,
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gin_helper::Dictionary result) {
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DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
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auto* item = download_manager_->GetDownload(download_id);
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if (!item)
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return;
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bool canceled = true;
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result.Get("canceled", &canceled);
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base::FilePath path;
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if (!canceled) {
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if (result.Get("filePath", &path)) {
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// Remember the last selected download directory.
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auto* browser_context = static_cast<ElectronBrowserContext*>(
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download_manager_->GetBrowserContext());
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browser_context->prefs()->SetFilePath(prefs::kDownloadDefaultDirectory,
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path.DirName());
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api::DownloadItem* download = api::DownloadItem::FromDownloadItem(item);
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if (download)
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download->SetSavePath(path);
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}
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}
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// Running the DownloadTargetCallback with an empty FilePath signals that the
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// download should be cancelled. If user cancels the file save dialog, run
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// the callback with empty FilePath.
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const auto interrupt_reason =
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path.empty() ? download::DOWNLOAD_INTERRUPT_REASON_USER_CANCELED
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: download::DOWNLOAD_INTERRUPT_REASON_NONE;
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std::move(download_callback)
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.Run(path, download::DownloadItem::TARGET_DISPOSITION_PROMPT,
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download::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
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item->GetMixedContentStatus(), path, base::nullopt,
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interrupt_reason);
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}
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void ElectronDownloadManagerDelegate::Shutdown() {
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weak_ptr_factory_.InvalidateWeakPtrs();
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download_manager_ = nullptr;
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}
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bool ElectronDownloadManagerDelegate::DetermineDownloadTarget(
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download::DownloadItem* download,
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content::DownloadTargetCallback* callback) {
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DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
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if (!download->GetForcedFilePath().empty()) {
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std::move(*callback).Run(
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download->GetForcedFilePath(),
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download::DownloadItem::TARGET_DISPOSITION_OVERWRITE,
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download::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
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download::DownloadItem::MixedContentStatus::UNKNOWN,
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download->GetForcedFilePath(), base::nullopt,
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download::DOWNLOAD_INTERRUPT_REASON_NONE);
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return true;
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}
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// Try to get the save path from JS wrapper.
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base::FilePath save_path;
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GetItemSavePath(download, &save_path);
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if (!save_path.empty()) {
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std::move(*callback).Run(
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save_path, download::DownloadItem::TARGET_DISPOSITION_OVERWRITE,
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download::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
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download::DownloadItem::MixedContentStatus::UNKNOWN, save_path,
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base::nullopt, download::DOWNLOAD_INTERRUPT_REASON_NONE);
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return true;
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}
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auto* browser_context = static_cast<ElectronBrowserContext*>(
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download_manager_->GetBrowserContext());
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base::FilePath default_download_path =
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browser_context->prefs()->GetFilePath(prefs::kDownloadDefaultDirectory);
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base::ThreadPool::PostTaskAndReplyWithResult(
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FROM_HERE,
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{base::MayBlock(), base::TaskPriority::BEST_EFFORT,
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base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN},
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base::BindOnce(&CreateDownloadPath, download->GetURL(),
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download->GetContentDisposition(),
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download->GetSuggestedFilename(), download->GetMimeType(),
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default_download_path),
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base::BindOnce(&ElectronDownloadManagerDelegate::OnDownloadPathGenerated,
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weak_ptr_factory_.GetWeakPtr(), download->GetId(),
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std::move(*callback)));
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return true;
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}
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bool ElectronDownloadManagerDelegate::ShouldOpenDownload(
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download::DownloadItem* download,
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content::DownloadOpenDelayedCallback callback) {
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return true;
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}
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void ElectronDownloadManagerDelegate::GetNextId(
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content::DownloadIdCallback callback) {
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static uint32_t next_id = download::DownloadItem::kInvalidId + 1;
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std::move(callback).Run(next_id++);
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}
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} // namespace electron
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