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      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
     90