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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 "ppapi/c/dev/ppb_file_chooser_dev.h"
      6 #include "ppapi/c/pp_input_event.h"
      7 #include "ppapi/cpp/completion_callback.h"
      8 #include "ppapi/cpp/dev/file_chooser_dev.h"
      9 #include "ppapi/cpp/file_ref.h"
     10 #include "ppapi/cpp/input_event.h"
     11 #include "ppapi/cpp/module.h"
     12 #include "ppapi/cpp/private/instance_private.h"
     13 #include "ppapi/cpp/private/var_private.h"
     14 #include "ppapi/utility/completion_callback_factory.h"
     15 
     16 class MyInstance : public pp::InstancePrivate {
     17  public:
     18   MyInstance(PP_Instance instance)
     19       : pp::InstancePrivate(instance) {
     20     callback_factory_.Initialize(this);
     21     RequestInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
     22   }
     23 
     24   virtual bool HandleInputEvent(const pp::InputEvent& event) {
     25     switch (event.GetType()) {
     26       case PP_INPUTEVENT_TYPE_MOUSEDOWN: {
     27         pp::MouseInputEvent mouse_event(event);
     28         if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT)
     29           ShowFileChooser(false);
     30         else if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_RIGHT)
     31           ShowFileChooser(true);
     32         else
     33           return false;
     34 
     35         return true;
     36       }
     37       default:
     38         return false;
     39     }
     40   }
     41 
     42  private:
     43   void ShowFileChooser(bool multi_select) {
     44     RecreateConsole();
     45 
     46     PP_FileChooserMode_Dev mode =
     47         (multi_select ? PP_FILECHOOSERMODE_OPENMULTIPLE
     48                       : PP_FILECHOOSERMODE_OPEN);
     49     std::string accept_types = (multi_select ? "" : "text/plain");
     50 
     51     chooser_ = pp::FileChooser_Dev(this, mode, accept_types);
     52     chooser_.Show(callback_factory_.NewCallbackWithOutput(
     53         &MyInstance::ShowSelectedFileNames));
     54   }
     55 
     56   void ShowSelectedFileNames(int32_t result,
     57                              const std::vector<pp::FileRef>& files) {
     58     if (result != PP_OK)
     59       return;
     60     for (size_t i = 0; i < files.size(); i++)
     61       Log(files[i].GetName());
     62   }
     63 
     64   void RecreateConsole() {
     65     pp::VarPrivate doc = GetWindowObject().GetProperty("document");
     66     pp::VarPrivate body = doc.GetProperty("body");
     67     if (!console_.is_undefined())
     68       body.Call("removeChild", console_);
     69 
     70     console_ = doc.Call("createElement", "pre");
     71     console_.SetProperty("id", "console");
     72     console_.GetProperty("style").SetProperty("backgroundColor", "lightgray");
     73     body.Call("appendChild", console_);
     74   }
     75 
     76   void Log(const pp::Var& var) {
     77     pp::VarPrivate doc = GetWindowObject().GetProperty("document");
     78     console_.Call("appendChild", doc.Call("createTextNode", var));
     79     console_.Call("appendChild", doc.Call("createTextNode", "\n"));
     80   }
     81 
     82   pp::FileChooser_Dev chooser_;
     83 
     84   pp::CompletionCallbackFactory<MyInstance> callback_factory_;
     85   pp::VarPrivate console_;
     86 };
     87 
     88 class MyModule : public pp::Module {
     89  public:
     90   MyModule() : pp::Module() {}
     91   virtual ~MyModule() {}
     92 
     93   virtual pp::Instance* CreateInstance(PP_Instance instance) {
     94     return new MyInstance(instance);
     95   }
     96 };
     97 
     98 namespace pp {
     99 
    100 // Factory function for your specialization of the Module object.
    101 Module* CreateModule() {
    102   return new MyModule();
    103 }
    104 
    105 }  // namespace pp
    106