Revert 110949 - views: Move widget/ directory to ui/views.

ui/views/widget/drop_target_gtk.cc

-// 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 "ui/views/widget/drop_target_gtk.h"
-
-#include <algorithm>
-#include <iterator>
-#include <string>
-#include <vector>
-
-#include "base/file_path.h"
-#include "base/utf_string_conversions.h"
-#include "net/base/net_util.h"
-#include "ui/base/dragdrop/drag_drop_types.h"
-#include "ui/base/dragdrop/gtk_dnd_util.h"
-#include "ui/base/dragdrop/os_exchange_data_provider_gtk.h"
-#include "ui/gfx/point.h"
-#include "ui/views/widget/native_widget_gtk.h"
-#include "ui/views/widget/root_view.h"
-
-using ui::OSExchangeData;
-
-namespace {
-
-std::string GdkAtomToString(GdkAtom atom) {
-  gchar* c_name = gdk_atom_name(atom);
-  std::string name(c_name);
-  g_free(c_name);
-  return name;
-}
-
-// Returns true if |name| is a known name of plain text.
-bool IsTextType(const std::string& name) {
-  return name == "text/plain" || name == "TEXT" ||
-         name == "STRING" || name == "UTF8_STRING" ||
-         name == "text/plain;charset=utf-8";
-}
-
-// Returns the OSExchangeData::Formats in |targets| and all the
-// OSExchangeData::CustomFormats in |type_set|.
-int CalculateTypes(GList* targets, std::set<GdkAtom>* type_set) {
-  int types = 0;
-  for (GList* element = targets; element;
-       element = g_list_next(element)) {
-    GdkAtom atom = static_cast<GdkAtom>(element->data);
-    type_set->insert(atom);
-    if (atom == GDK_TARGET_STRING) {
-      types |= OSExchangeData::STRING;
-    } else if (atom == ui::GetAtomForTarget(ui::CHROME_NAMED_URL)) {
-      types |= OSExchangeData::URL;
-    } else if (atom == ui::GetAtomForTarget(ui::TEXT_URI_LIST)) {
-      // TEXT_URI_LIST is used for files as well as urls.
-      types |= OSExchangeData::URL | OSExchangeData::FILE_NAME;
-    } else {
-      std::string target_name = GdkAtomToString(atom);
-      if (IsTextType(target_name)) {
-        types |= OSExchangeData::STRING;
-      } else {
-        // Assume any unknown data is pickled.
-        types |= OSExchangeData::PICKLED_DATA;
-      }
-    }
-  }
-  return types;
-}
-
-}  // namespace
-
-namespace views {
-
-DropTargetGtk::DropTargetGtk(internal::RootView* root_view,
-                             GdkDragContext* context)
-    : helper_(root_view),
-      requested_formats_(0),
-      waiting_for_data_(false),
-      received_drop_(false),
-      pending_view_(NULL) {
-  std::set<GdkAtom> all_formats;
-  int source_formats = CalculateTypes(context->targets, &all_formats);
-  data_.reset(new OSExchangeData(new OSExchangeDataProviderGtk(
-                                     source_formats, all_formats)));
-}
-
-DropTargetGtk::~DropTargetGtk() {
-}
-
-void DropTargetGtk::ResetTargetViewIfEquals(View* view) {
-  helper_.ResetTargetViewIfEquals(view);
-}
-
-void DropTargetGtk::OnDragDataReceived(GdkDragContext* context,
-                                       gint x,
-                                       gint y,
-                                       GtkSelectionData* data,
-                                       guint info,
-                                       guint time) {
-  std::string target_name = GdkAtomToString(data->type);
-  if (data->type == GDK_TARGET_STRING || IsTextType(target_name)) {
-    guchar* text_data = gtk_selection_data_get_text(data);
-    string16 result;
-    if (text_data) {
-      char* as_char = reinterpret_cast<char*>(text_data);
-      UTF8ToUTF16(as_char, strlen(as_char), &result);
-      g_free(text_data);
-    }
-    data_provider().SetString(result);
-  } else if (requested_custom_formats_.find(data->type) !=
-             requested_custom_formats_.end()) {
-    Pickle result;
-    if (data->length > 0)
-      result = Pickle(reinterpret_cast<char*>(data->data), data->length);
-    data_provider().SetPickledData(data->type, result);
-  } else if (data->type == ui::GetAtomForTarget(ui::CHROME_NAMED_URL)) {
-    GURL url;
-    string16 title;
-    ui::ExtractNamedURL(data, &url, &title);
-    data_provider().SetURL(url, title);
-  } else if (data->type == ui::GetAtomForTarget(ui::TEXT_URI_LIST)) {
-    std::vector<GURL> urls;
-    ui::ExtractURIList(data, &urls);
-    if (urls.size() == 1 && urls[0].is_valid()) {
-      data_provider().SetURL(urls[0], string16());
-
-      // TEXT_URI_LIST is used for files as well as urls.
-      if (urls[0].SchemeIsFile()) {
-        FilePath file_path;
-        if (net::FileURLToFilePath(urls[0], &file_path))
-          data_provider().SetFilename(file_path);
-      }
-    } else {
-      // Consumers of OSExchangeData will see this as an invalid URL. That is,
-      // when GetURL is invoked on the OSExchangeData this triggers false to
-      // be returned.
-      data_provider().SetURL(GURL(), string16());
-    }
-  }
-
-  if (!data_->HasAllFormats(requested_formats_, requested_custom_formats_))
-    return;  // Waiting on more data.
-
-  int drag_operation = ui::DragDropTypes::GdkDragActionToDragOperation(
-      context->actions);
-  gfx::Point root_view_location(x, y);
-  drag_operation = helper_.OnDragOver(*data_, root_view_location,
-                                      drag_operation);
-  GdkDragAction gdk_action = static_cast<GdkDragAction>(
-      ui::DragDropTypes::DragOperationToGdkDragAction(drag_operation));
-  if (!received_drop_)
-    gdk_drag_status(context, gdk_action, time);
-
-  waiting_for_data_ = false;
-
-  if (pending_view_ && received_drop_) {
-    FinishDrop(context, x, y, time);
-    // WARNING: we've been deleted.
-    return;
-  }
-}
-
-gboolean DropTargetGtk::OnDragDrop(GdkDragContext* context,
-                                   gint x,
-                                   gint y,
-                                   guint time) {
-  received_drop_ = true;
-  OnDragMotion(context, x, y, time);
-  if (!pending_view_) {
-    // User isn't over a view, no drop can occur.
-    static_cast<NativeWidgetGtk*>(
-        helper_.root_view()->GetWidget()->native_widget())->ResetDropTarget();
-    // WARNING: we've been deleted.
-    return FALSE;
-  }
-
-  if (!waiting_for_data_) {
-    // We've got all the data now.
-    FinishDrop(context, x, y, time);
-    // WARNING: we've been deleted.
-    return TRUE;
-  }
-  // We're waiting on data.
-  return TRUE;
-}
-
-void DropTargetGtk::OnDragLeave(GdkDragContext* context, guint time) {
-  helper_.OnDragExit();
-}
-
-gboolean DropTargetGtk::OnDragMotion(GdkDragContext* context,
-                                     gint x,
-                                     gint y,
-                                     guint time) {
-  waiting_for_data_ = false;
-  gfx::Point root_view_location(x, y);
-  pending_view_ =
-      helper_.CalculateTargetView(root_view_location, *data_, false);
-  if (pending_view_ &&
-      (received_drop_ || (pending_view_ != helper_.target_view() &&
-                          pending_view_->AreDropTypesRequired()))) {
-    // The target requires drop types before it can answer CanDrop,
-    // ask for the data now.
-    int formats = 0;
-    std::set<GdkAtom> custom_formats;
-    pending_view_->GetDropFormats(&formats, &custom_formats);
-    IntersectFormats(data_provider().known_formats(),
-                     data_provider().known_custom_formats(),
-                     &formats, &custom_formats);
-    if (!data_provider().HasDataForAllFormats(formats, custom_formats)) {
-      if (!received_drop_)
-        helper_.OnDragExit();
-
-      // The target needs data for all the types before it can test if the
-      // drop is valid, but we don't have all the data. Request the data
-      // now. When we get back the data we'll update the target.
-      RequestFormats(context, formats, custom_formats, time);
-
-      waiting_for_data_ = true;
-
-      return TRUE;
-    }
-  }
-
-  int drag_operation = ui::DragDropTypes::GdkDragActionToDragOperation(
-      context->actions);
-  drag_operation = helper_.OnDragOver(*data_, root_view_location,
-                                      drag_operation);
-  if (!received_drop_) {
-    GdkDragAction gdk_action =
-        static_cast<GdkDragAction>(
-            ui::DragDropTypes::DragOperationToGdkDragAction(drag_operation));
-    gdk_drag_status(context, gdk_action, time);
-  }
-  return TRUE;
-}
-
-void DropTargetGtk::FinishDrop(GdkDragContext* context,
-                               gint x, gint y, guint time) {
-  gfx::Point root_view_location(x, y);
-  int drag_operation = ui::DragDropTypes::GdkDragActionToDragOperation(
-      context->actions);
-  drag_operation = helper_.OnDrop(*data_, root_view_location,
-                                  drag_operation);
-  GdkDragAction gdk_action =
-      static_cast<GdkDragAction>(
-          ui::DragDropTypes::DragOperationToGdkDragAction(drag_operation));
-  gtk_drag_finish(context, gdk_action != 0, (gdk_action & GDK_ACTION_MOVE),
-                  time);
-
-  static_cast<NativeWidgetGtk*>(helper_.root_view()->GetWidget()->
-      native_widget())->ResetDropTarget();
-  // WARNING: we've been deleted.
-}
-
-void DropTargetGtk::IntersectFormats(int f1, const std::set<GdkAtom>& cf1,
-                                     int* f2, std::set<GdkAtom>* cf2) {
-  *f2 = (*f2 & f1);
-  std::set<GdkAtom> cf;
-  std::set_intersection(
-      cf1.begin(), cf1.end(), cf2->begin(), cf2->end(),
-      std::insert_iterator<std::set<GdkAtom> >(cf, cf.begin()));
-  cf.swap(*cf2);
-}
-
-void DropTargetGtk::RequestFormats(GdkDragContext* context,
-                                   int formats,
-                                   const std::set<GdkAtom>& custom_formats,
-                                   guint time) {
-  GtkWidget* widget = static_cast<NativeWidgetGtk*>(helper_.root_view()->
-      GetWidget()->native_widget())->window_contents();
-
-  const std::set<GdkAtom>& known_formats =
-      data_provider().known_custom_formats();
-  if ((formats & OSExchangeData::STRING) != 0 &&
-      (requested_formats_ & OSExchangeData::STRING) == 0) {
-    requested_formats_ |= OSExchangeData::STRING;
-    if (known_formats.count(gdk_atom_intern("UTF8_STRING", false))) {
-      gtk_drag_get_data(widget, context,
-                        gdk_atom_intern("UTF8_STRING", false), time);
-    } else if (known_formats.count(gdk_atom_intern("text/plain;charset=utf-8",
-                                                   false))) {
-      gtk_drag_get_data(widget, context,
-                        gdk_atom_intern("text/plain;charset=utf-8", false),
-                        time);
-    } else if (known_formats.count(GDK_TARGET_STRING)) {
-      gtk_drag_get_data(widget, context, GDK_TARGET_STRING, time);
-    } else if (known_formats.count(gdk_atom_intern("text/plain", false))) {
-      gtk_drag_get_data(widget, context, gdk_atom_intern("text/plain", false),
-                        time);
-    } else if (known_formats.count(gdk_atom_intern("TEXT", false))) {
-        gtk_drag_get_data(widget, context, gdk_atom_intern("TEXT", false),
-                          time);
-    } else if (known_formats.count(gdk_atom_intern("STRING", false))) {
-      gtk_drag_get_data(widget, context, gdk_atom_intern("STRING", false),
-                        time);
-    }
-  }
-  if ((formats & OSExchangeData::URL) != 0 &&
-      (requested_formats_ & OSExchangeData::URL) == 0) {
-    requested_formats_ |= OSExchangeData::URL;
-    if (known_formats.count(ui::GetAtomForTarget(ui::CHROME_NAMED_URL))) {
-      gtk_drag_get_data(widget, context,
-                        ui::GetAtomForTarget(ui::CHROME_NAMED_URL), time);
-    } else if (known_formats.count(
-                   ui::GetAtomForTarget(ui::TEXT_URI_LIST))) {
-      gtk_drag_get_data(widget, context,
-                        ui::GetAtomForTarget(ui::TEXT_URI_LIST), time);
-    }
-  }
-  if (((formats & OSExchangeData::FILE_NAME) != 0) &&
-      (requested_formats_ & OSExchangeData::FILE_NAME) == 0) {
-    requested_formats_ |= OSExchangeData::FILE_NAME;
-    gtk_drag_get_data(widget, context,
-                      ui::GetAtomForTarget(ui::TEXT_URI_LIST), time);
-  }
-  for (std::set<GdkAtom>::const_iterator i = custom_formats.begin();
-       i != custom_formats.end(); ++i) {
-    if (requested_custom_formats_.find(*i) ==
-        requested_custom_formats_.end()) {
-      requested_custom_formats_.insert(*i);
-      gtk_drag_get_data(widget, context, *i, time);
-    }
-  }
-}
-
-OSExchangeDataProviderGtk& DropTargetGtk::data_provider() const {
-  return static_cast<OSExchangeDataProviderGtk&>(data_->provider());
-}
-
-}  // namespace views