Add dialog API.

Supported APIs:
* openFile
* openMultiFiles
* openFolder
* saveAs

Each API is asynchronous and accepts a callback.

atom.gyp

@@ -8,6 +8,7 @@
     'coffee_sources': [
       'browser/api/lib/app.coffee',
       'browser/api/lib/atom.coffee',
+      'browser/api/lib/dialog.coffee',
       'browser/api/lib/ipc.coffee',
       'browser/api/lib/window.coffee',
       'browser/atom/atom.coffee',
@@ -16,6 +17,7 @@
       'common/api/lib/clipboard.coffee',
       'common/api/lib/id_weak_map.coffee',
       'common/api/lib/shell.coffee',
+      'renderer/api/lib/dialog.coffee',
       'renderer/api/lib/ipc.coffee',
       'renderer/api/lib/remote.coffee',
     ],
@@ -30,6 +32,8 @@
       'browser/api/atom_api_event.h',
       'browser/api/atom_api_event_emitter.cc',
       'browser/api/atom_api_event_emitter.h',
+      'browser/api/atom_api_file_dialog.cc',
+      'browser/api/atom_api_file_dialog.h',
       'browser/api/atom_api_window.cc',
       'browser/api/atom_api_window.h',
       'browser/api/atom_browser_bindings.cc',

browser/api/atom_api_app.h

@@ -14,7 +14,7 @@ namespace atom {
 namespace api {
 
 class App : public EventEmitter,
-            public BrowserObserver{
+            public BrowserObserver {
  public:
   virtual ~App();
 

browser/api/atom_api_file_dialog.cc

@@ -0,0 +1,191 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "browser/api/atom_api_file_dialog.h"
+
+#include <string>
+
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "browser/native_window.h"
+
+namespace atom {
+
+namespace api {
+
+namespace {
+
+base::FilePath V8ValueToFilePath(v8::Handle<v8::Value> path) {
+  std::string path_string(*v8::String::Utf8Value(path));
+  return base::FilePath::FromUTF8Unsafe(path_string);
+}
+
+ui::SelectFileDialog::Type IntToDialogType(int type) {
+  switch (type) {
+    case ui::SelectFileDialog::SELECT_FOLDER:
+      return ui::SelectFileDialog::SELECT_FOLDER;
+    case ui::SelectFileDialog::SELECT_SAVEAS_FILE:
+      return ui::SelectFileDialog::SELECT_SAVEAS_FILE;
+    case ui::SelectFileDialog::SELECT_OPEN_FILE:
+      return ui::SelectFileDialog::SELECT_OPEN_FILE;
+    case ui::SelectFileDialog::SELECT_OPEN_MULTI_FILE:
+      return ui::SelectFileDialog::SELECT_OPEN_MULTI_FILE;
+    default:
+      return ui::SelectFileDialog::SELECT_NONE;
+  }
+}
+
+}  // namespace
+
+FileDialog::FileDialog(v8::Handle<v8::Object> wrapper)
+    : EventEmitter(wrapper),
+      dialog_(ui::SelectFileDialog::Create(this, NULL)) {
+}
+
+FileDialog::~FileDialog() {
+}
+
+void FileDialog::FileSelected(const base::FilePath& path,
+                              int index, void* params) {
+  int* id = static_cast<int*>(params);
+
+  base::ListValue args;
+  args.AppendInteger(*id);
+  args.AppendString(path.value());
+
+  Emit("selected", &args);
+
+  delete id;
+}
+
+void FileDialog::MultiFilesSelected(const std::vector<base::FilePath>& files,
+                                    void* params) {
+  int* id = static_cast<int*>(params);
+
+  base::ListValue args;
+  args.AppendInteger(*id);
+  for (size_t i = 0; i < files.size(); i++)
+    args.AppendString(files[i].value());
+
+  Emit("selected", &args);
+
+  delete id;
+}
+
+void FileDialog::FileSelectionCanceled(void* params) {
+  int* id = static_cast<int*>(params);
+
+  base::ListValue args;
+  args.AppendInteger(*id);
+
+  Emit("cancelled", &args);
+
+  delete id;
+}
+
+// static
+v8::Handle<v8::Value> FileDialog::New(const v8::Arguments &args) {
+  v8::HandleScope scope;
+
+  if (!args.IsConstructCall())
+    return node::ThrowError("Require constructor call");
+
+  new FileDialog(args.This());
+
+  return args.This();
+}
+
+// static
+v8::Handle<v8::Value> FileDialog::SelectFile(const v8::Arguments &args) {
+  FileDialog* self = Unwrap<FileDialog>(args.This());
+  if (!self)
+    return node::ThrowError("The FileDialog object is corrupted");
+
+  if (!args[0]->IsNumber() ||  // process_id
+      !args[1]->IsNumber() ||  // routing_id
+      !args[2]->IsNumber() ||  // type
+      !args[3]->IsString() ||  // title
+      !args[4]->IsString() ||  // default_path
+      !args[5]->IsArray() ||   // file_types
+      !args[6]->IsNumber() ||  // file_type_index
+      !args[7]->IsString() ||  // default_extension
+      !args[8]->IsNumber())    // callback_id
+    return node::ThrowTypeError("Bad argument");
+
+  int process_id = args[0]->IntegerValue();
+  int routing_id = args[1]->IntegerValue();
+  NativeWindow* window = NativeWindow::FromRenderView(process_id, routing_id);
+  if (!window)
+    return node::ThrowError("Window not found");
+
+  gfx::NativeWindow owning_window = window->GetNativeWindow();
+
+  int type = args[2]->IntegerValue();
+  std::string title(*v8::String::Utf8Value(args[3]));
+  base::FilePath default_path(V8ValueToFilePath(args[4]));
+
+  ui::SelectFileDialog::FileTypeInfo file_types;
+  FillTypeInfo(&file_types, v8::Handle<v8::Array>::Cast(args[5]));
+
+  int file_type_index = args[6]->IntegerValue();
+  std::string default_extension(*v8::String::Utf8Value(args[7]));
+  int callback_id = args[8]->IntegerValue();
+
+  self->dialog_->SelectFile(
+      IntToDialogType(type),
+      UTF8ToUTF16(title),
+      default_path,
+      file_types.extensions.size() > 0 ? &file_types : NULL,
+      file_type_index,
+      default_extension,
+      owning_window,
+      new int(callback_id));
+
+  return v8::Undefined();
+}
+
+// static
+void FileDialog::FillTypeInfo(ui::SelectFileDialog::FileTypeInfo* file_types,
+                              v8::Handle<v8::Array> v8_file_types) {
+  file_types->include_all_files = true;
+  file_types->support_drive = true;
+
+  for (uint32_t i = 0; i < v8_file_types->Length(); ++i) {
+    v8::Handle<v8::Object> element = v8_file_types->Get(i)->ToObject(); 
+
+    std::string description(*v8::String::Utf8Value(
+        element->Get(v8::String::New("description"))));
+    file_types->extension_description_overrides.push_back(
+        UTF8ToUTF16(description));
+
+    std::vector<base::FilePath::StringType> extensions;
+    v8::Handle<v8::Array> v8_extensions = v8::Handle<v8::Array>::Cast(
+        element->Get(v8::String::New("extensions")));
+
+    for (uint32_t j = 0; j < v8_extensions->Length(); ++j) {
+      std::string extension(*v8::String::Utf8Value(v8_extensions->Get(j)));
+      extensions.push_back(extension);
+    }
+    file_types->extensions.push_back(extensions);
+  }
+}
+
+// static
+void FileDialog::Initialize(v8::Handle<v8::Object> target) {
+  v8::HandleScope scope;
+
+  v8::Local<v8::FunctionTemplate> t(v8::FunctionTemplate::New(FileDialog::New));
+  t->InstanceTemplate()->SetInternalFieldCount(1);
+  t->SetClassName(v8::String::NewSymbol("FileDialog"));
+
+  NODE_SET_PROTOTYPE_METHOD(t, "selectFile", SelectFile);
+
+  target->Set(v8::String::NewSymbol("FileDialog"), t->GetFunction());
+}
+
+}  // namespace api
+
+}  // namespace atom
+
+NODE_MODULE(atom_browser_file_dialog, atom::api::FileDialog::Initialize)

browser/api/atom_api_file_dialog.h

@@ -0,0 +1,47 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_ATOM_API_FILE_DIALOG_H_
+#define ATOM_BROWSER_API_ATOM_API_FILE_DIALOG_H_
+
+#include "browser/api/atom_api_event_emitter.h"
+#include "ui/shell_dialogs/select_file_dialog.h"
+
+namespace atom {
+
+namespace api {
+
+class FileDialog : public EventEmitter,
+                   public ui::SelectFileDialog::Listener {
+ public:
+  virtual ~FileDialog();
+
+  static void Initialize(v8::Handle<v8::Object> target);
+
+  // ui::SelectFileDialog::Listener implementations:
+  virtual void FileSelected(const base::FilePath& path,
+                            int index, void* params) OVERRIDE;
+  virtual void MultiFilesSelected(
+      const std::vector<base::FilePath>& files, void* params) OVERRIDE;
+  virtual void FileSelectionCanceled(void* params) OVERRIDE;
+
+ private:
+  explicit FileDialog(v8::Handle<v8::Object> wrapper);
+
+  static void FillTypeInfo(ui::SelectFileDialog::FileTypeInfo* file_types,
+                           v8::Handle<v8::Array> v8_file_types);
+
+  static v8::Handle<v8::Value> New(const v8::Arguments &args);
+  static v8::Handle<v8::Value> SelectFile(const v8::Arguments &args);
+
+  scoped_refptr<ui::SelectFileDialog> dialog_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileDialog);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_ATOM_API_FILE_DIALOG_H_

browser/api/lib/dialog.coffee

@@ -0,0 +1,51 @@
+EventEmitter = require('events').EventEmitter
+ipc = require 'ipc'
+
+FileDialog = process.atomBinding('file_dialog').FileDialog
+FileDialog.prototype.__proto__ = EventEmitter.prototype
+
+callbacksInfo = {}
+
+fileDialog = new FileDialog
+
+onSelected = (event, id, paths...) ->
+  {processId, routingId} = callbacksInfo[id]
+  delete callbacksInfo[id]
+
+  ipc.sendChannel processId, routingId, 'ATOM_RENDERER_DIALOG', id, paths...
+
+fileDialog.on 'selected', onSelected
+fileDialog.on 'cancelled', onSelected
+
+validateOptions = (options) ->
+  return false unless typeof options is 'object'
+
+  options.fileTypes = [] unless Array.isArray options.fileTypes
+  for type in options.fileTypes
+    return false unless typeof type is 'object' and
+                        typeof type.description is 'string'
+                        Array.isArray type.extensions
+
+  options.defaultPath = '' unless options.defaultPath?
+  options.fileTypeIndex = 0 unless options.fileTypeIndex?
+  options.defaultExtension = '' unless options.defaultExtension?
+
+  true
+
+ipc.on 'ATOM_BROWSER_FILE_DIALOG', (processId, routingId, callbackId, type, title, options) ->
+  options = {} unless options?
+  options.type = type
+  options.title = title unless options.title?
+
+  throw new TypeError('Bad arguments') unless validateOptions options
+
+  callbacksInfo[callbackId] = processId: processId, routingId: routingId
+
+  fileDialog.selectFile processId, routingId,
+                        options.type,
+                        options.title,
+                        options.defaultPath,
+                        options.fileTypes,
+                        options.fileTypeIndex,
+                        options.defaultExtension,
+                        callbackId

browser/native_window.cc

@@ -60,8 +60,7 @@ NativeWindow* NativeWindow::Create(base::DictionaryValue* options) {
 }
 
 // static
-NativeWindow* NativeWindow::FromProcessIDAndRoutingID(int process_id,
+NativeWindow* NativeWindow::FromRenderView(int process_id, int routing_id) {
-                                                      int routing_id) {
   // Stupid iterating.
   WindowList& window_list = *WindowList::GetInstance();
   for (auto window : window_list) {

browser/native_window.h

@@ -55,8 +55,7 @@ class NativeWindow : public content::WebContentsDelegate,
   static NativeWindow* Create(base::DictionaryValue* options);
 
   // Find a window from its process id and routing id.
-  static NativeWindow* FromProcessIDAndRoutingID(int process_id,
+  static NativeWindow* FromRenderView(int process_id, int routing_id);
-                                                 int routing_id);
 
   void InitFromOptions(base::DictionaryValue* options);
 
@@ -90,6 +89,7 @@ class NativeWindow : public content::WebContentsDelegate,
   virtual void FlashFrame(bool flash) = 0;
   virtual void SetKiosk(bool kiosk) = 0;
   virtual bool IsKiosk() = 0;
+  virtual gfx::NativeWindow GetNativeWindow() = 0;
 
   virtual bool IsClosed() const { return is_closed_; }
   virtual void ShowDevTools();

browser/native_window_mac.h

@@ -49,6 +49,7 @@ class NativeWindowMac : public NativeWindow {
   virtual void FlashFrame(bool flash) OVERRIDE;
   virtual void SetKiosk(bool kiosk) OVERRIDE;
   virtual bool IsKiosk() OVERRIDE;
+  virtual gfx::NativeWindow GetNativeWindow() OVERRIDE;
 
   NSWindow*& window() { return window_; }
 

browser/native_window_mac.mm

@@ -360,6 +360,10 @@ bool NativeWindowMac::IsKiosk() {
   return is_kiosk_;
 }
 
+gfx::NativeWindow NativeWindowMac::GetNativeWindow() {
+  return window();
+}
+
 void NativeWindowMac::HandleKeyboardEvent(
     content::WebContents*,
     const content::NativeWebKeyboardEvent& event) {

common/api/atom_extensions.h

@@ -10,6 +10,7 @@ NODE_EXT_LIST_START
 
 // Module names start with `atom_browser_` can only be used by browser process.
 NODE_EXT_LIST_ITEM(atom_browser_app)
+NODE_EXT_LIST_ITEM(atom_browser_file_dialog)
 NODE_EXT_LIST_ITEM(atom_browser_ipc)
 NODE_EXT_LIST_ITEM(atom_browser_window)
 

renderer/api/lib/dialog.coffee

@@ -0,0 +1,41 @@
+ipc = require 'ipc'
+
+callbackId = 0
+callbacks = {}
+
+storeCallback = (callback) ->
+  throw new TypeError('Bad argument') unless typeof callback is 'function'
+
+  ++callbackId
+  callbacks[callbackId] = callback
+  callbackId
+
+makeCallback = (id, args...) ->
+  callbacks[id].call global, args...
+  delete callbacks[id]
+
+# Force loading dialog code in browser.
+remote.require 'dialog'
+
+ipc.on 'ATOM_RENDERER_DIALOG', (id, args...) ->
+  makeCallback(id, args...)
+
+callFileDialogs = (options, callback, args...) ->
+  if typeof options is 'function'
+    callback = options
+    options = {}
+
+  ipc.sendChannel 'ATOM_BROWSER_FILE_DIALOG', storeCallback(callback), args..., options
+
+module.exports =
+  openFolder: (options, callback) ->
+    callFileDialogs options, callback, 1, 'Open Folder'
+
+  saveAs: (options, callback) ->
+    callFileDialogs options, callback, 2, 'Save As'
+
+  openFile: (options, callback) ->
+    callFileDialogs options, callback, 3, 'Open File'
+
+  openMultiFiles: (options, callback) ->
+    callFileDialogs options, callback, 4, 'Open Files'