1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
// Copyright (c) 2011 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/browser/printing/print_preview_message_handler.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/printing/background_printing_manager.h"
#include "chrome/browser/printing/print_job_manager.h"
#include "chrome/browser/printing/print_preview_tab_controller.h"
#include "chrome/browser/printing/print_view_manager.h"
#include "chrome/browser/printing/printer_query.h"
#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
#include "chrome/browser/ui/webui/print_preview_handler.h"
#include "chrome/browser/ui/webui/print_preview_ui.h"
#include "chrome/common/print_messages.h"
#include "content/browser/browser_thread.h"
#include "content/browser/renderer_host/render_view_host.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/common/content_restriction.h"
namespace {
void StopWorker(int document_cookie) {
printing::PrintJobManager* print_job_manager =
g_browser_process->print_job_manager();
scoped_refptr<printing::PrinterQuery> printer_query;
print_job_manager->PopPrinterQuery(document_cookie, &printer_query);
if (printer_query.get()) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(printer_query.get(),
&printing::PrinterQuery::StopWorker));
}
}
} // namespace
namespace printing {
PrintPreviewMessageHandler::PrintPreviewMessageHandler(
TabContents* tab_contents)
: TabContentsObserver(tab_contents) {
DCHECK(tab_contents);
}
PrintPreviewMessageHandler::~PrintPreviewMessageHandler() {
}
TabContents* PrintPreviewMessageHandler::GetPrintPreviewTab() {
// Get/Create preview tab for initiator tab.
printing::PrintPreviewTabController* tab_controller =
printing::PrintPreviewTabController::GetInstance();
if (!tab_controller)
return NULL;
return tab_controller->GetPrintPreviewForTab(tab_contents());
}
void PrintPreviewMessageHandler::OnRequestPrintPreview() {
PrintPreviewTabController::PrintPreview(tab_contents());
}
void PrintPreviewMessageHandler::OnPagesReadyForPreview(
const PrintHostMsg_DidPreviewDocument_Params& params) {
// Always need to stop the worker and send PrintMsg_PrintingDone.
StopWorker(params.document_cookie);
RenderViewHost* rvh = tab_contents()->render_view_host();
rvh->Send(new PrintMsg_PrintingDone(rvh->routing_id(), true));
// Get the print preview tab.
TabContents* print_preview_tab = GetPrintPreviewTab();
// User might have closed it already.
if (!print_preview_tab)
return;
PrintPreviewUI* print_preview_ui =
static_cast<PrintPreviewUI*>(print_preview_tab->web_ui());
TabContentsWrapper* wrapper =
TabContentsWrapper::GetCurrentWrapperForContents(print_preview_tab);
if (params.reuse_existing_data) {
print_preview_ui->OnPreviewDataIsAvailable(
params.expected_pages_count,
wrapper->print_view_manager()->RenderSourceName(),
params.modifiable);
return;
}
base::SharedMemory* shared_buf =
new base::SharedMemory(params.metafile_data_handle, true);
if (!shared_buf->Map(params.data_size)) {
NOTREACHED();
delete shared_buf;
return;
}
wrapper->print_view_manager()->OverrideTitle(tab_contents());
char* preview_data = static_cast<char*>(shared_buf->memory());
uint32 preview_data_size = params.data_size;
scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
html_bytes->data.resize(preview_data_size);
std::vector<unsigned char>::iterator it = html_bytes->data.begin();
for (uint32 i = 0; i < preview_data_size; ++i, ++it)
*it = *(preview_data + i);
print_preview_ui->SetPrintPreviewData(html_bytes.get());
print_preview_ui->OnPreviewDataIsAvailable(
params.expected_pages_count,
wrapper->print_view_manager()->RenderSourceName(),
params.modifiable);
}
void PrintPreviewMessageHandler::OnPrintPreviewFailed(int document_cookie) {
// Always need to stop the worker.
StopWorker(document_cookie);
// Inform the print preview tab of the failure.
TabContents* print_preview_tab = GetPrintPreviewTab();
// User might have closed it already.
if (!print_preview_tab)
return;
TabContentsWrapper* wrapper =
TabContentsWrapper::GetCurrentWrapperForContents(print_preview_tab);
if (g_browser_process->background_printing_manager()->
HasTabContents(wrapper)) {
// Preview tab was hidden to serve the print request.
delete wrapper;
} else {
PrintPreviewUI* print_preview_ui =
static_cast<PrintPreviewUI*>(print_preview_tab->web_ui());
print_preview_ui->CallJavascriptFunction("printPreviewFailed");
}
}
bool PrintPreviewMessageHandler::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PrintPreviewMessageHandler, message)
IPC_MESSAGE_HANDLER(PrintHostMsg_RequestPrintPreview,
OnRequestPrintPreview)
IPC_MESSAGE_HANDLER(PrintHostMsg_PagesReadyForPreview,
OnPagesReadyForPreview)
IPC_MESSAGE_HANDLER(PrintHostMsg_PrintPreviewFailed,
OnPrintPreviewFailed)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void PrintPreviewMessageHandler::DidStartLoading() {
if (tab_contents()->delegate() &&
printing::PrintPreviewTabController::IsPrintPreviewTab(tab_contents())) {
tab_contents()->SetContentRestrictions(CONTENT_RESTRICTION_PRINT);
}
}
} // namespace printing
|
