content/browser/download/download_request_handle.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/download/download_request_handle.h"
   6
   7 #include "base/bind.h"
   8 #include "base/strings/stringprintf.h"
   9 #include "content/browser/renderer_host/render_view_host_impl.h"
  10 #include "content/browser/web_contents/web_contents_impl.h"
  11 #include "content/public/browser/browser_context.h"
  12 #include "content/public/browser/browser_thread.h"
  13
  14 namespace content {
  15
  16 DownloadRequestHandle::~DownloadRequestHandle() {
  17 }
  18
  19 DownloadRequestHandle::DownloadRequestHandle()
  20     : child_id_(-1),
  21       render_view_id_(-1),
  22       request_id_(-1) {
  23 }
  24
  25 DownloadRequestHandle::DownloadRequestHandle(
  26     const base::WeakPtr<DownloadResourceHandler>& handler,
  27     int child_id,
  28     int render_view_id,
  29     int request_id)
  30     : handler_(handler),
  31       child_id_(child_id),
  32       render_view_id_(render_view_id),
  33       request_id_(request_id) {
  34   DCHECK(handler_.get());
  35 }
  36
  37 WebContents* DownloadRequestHandle::GetWebContents() const {
  38   RenderViewHostImpl* render_view_host =
  39       RenderViewHostImpl::FromID(child_id_, render_view_id_);
  40   if (!render_view_host)
  41     return NULL;
  42
  43   return render_view_host->GetDelegate()->GetAsWebContents();
  44 }
  45
  46 DownloadManager* DownloadRequestHandle::GetDownloadManager() const {
  47   RenderViewHostImpl* rvh = RenderViewHostImpl::FromID(
  48       child_id_, render_view_id_);
  49   if (rvh == NULL)
  50     return NULL;
  51   RenderProcessHost* rph = rvh->GetProcess();
  52   if (rph == NULL)
  53     return NULL;
  54   BrowserContext* context = rph->GetBrowserContext();
  55   if (context == NULL)
  56     return NULL;
  57   return BrowserContext::GetDownloadManager(context);
  58 }
  59
  60 void DownloadRequestHandle::PauseRequest() const {
  61   BrowserThread::PostTask(
  62       BrowserThread::IO, FROM_HERE,
  63       base::Bind(&DownloadResourceHandler::PauseRequest, handler_));
  64 }
  65
  66 void DownloadRequestHandle::ResumeRequest() const {
  67   BrowserThread::PostTask(
  68       BrowserThread::IO, FROM_HERE,
  69       base::Bind(&DownloadResourceHandler::ResumeRequest, handler_));
  70 }
  71
  72 void DownloadRequestHandle::CancelRequest() const {
  73   BrowserThread::PostTask(
  74       BrowserThread::IO, FROM_HERE,
  75       base::Bind(&DownloadResourceHandler::CancelRequest, handler_));
  76 }
  77
  78 std::string DownloadRequestHandle::DebugString() const {
  79   return base::StringPrintf("{"
  80                             " child_id = %d"
  81                             " render_view_id = %d"
  82                             " request_id = %d"
  83                             "}",
  84                             child_id_,
  85                             render_view_id_,
  86                             request_id_);
  87 }
  88
  89 }  // namespace content