Support dragging texts into Android WebView.

ui/base/dragdrop/os_exchange_data_provider_android.cc

+// Copyright 2016 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/base/dragdrop/os_exchange_data_provider_android.h"
+
+namespace ui {
+
+OSExchangeDataProviderAndroid::OSExchangeDataProviderAndroid() : formats_(0) {}
+
+OSExchangeDataProviderAndroid::~OSExchangeDataProviderAndroid() {}
+
+OSExchangeData::Provider* OSExchangeDataProviderAndroid::Clone() const {
+  OSExchangeDataProviderAndroid* provider = new OSExchangeDataProviderAndroid();
+  provider->string_ = string_;
+  provider->formats_ = formats_;
+
+  return provider;
+}
+
+void OSExchangeDataProviderAndroid::MarkOriginatedFromRenderer() {
+  NOTIMPLEMENTED();
+}
+
+bool OSExchangeDataProviderAndroid::DidOriginateFromRenderer() const {
+  return false;
+}
+
+void OSExchangeDataProviderAndroid::SetString(const base::string16& string) {
+  if (HasString())
+    return;
+
+  string_ = string;
+  formats_ |= OSExchangeData::STRING;
+}
+
+void OSExchangeDataProviderAndroid::SetURL(const GURL& url,
+                                           const base::string16& title) {
+  NOTIMPLEMENTED();
+}
+
+void OSExchangeDataProviderAndroid::SetFilename(const base::FilePath& path) {
+  NOTIMPLEMENTED();
+}
+
+void OSExchangeDataProviderAndroid::SetFilenames(
+    const std::vector<ui::FileInfo>& filenames) {
+  NOTIMPLEMENTED();
+}
+
+void OSExchangeDataProviderAndroid::SetPickledData(
+    const ui::Clipboard::FormatType& format,
+    const base::Pickle& pickle) {
+  NOTIMPLEMENTED();
+}
+
+bool OSExchangeDataProviderAndroid::GetString(base::string16* string) const {
+  if (!HasString())
+    return false;
+  *string = string_;
+  return true;
+}
+
+bool OSExchangeDataProviderAndroid::GetURLAndTitle(
+    ui::OSExchangeData::FilenameToURLPolicy policy,
+    GURL* url,
+    base::string16* title) const {
+  return false;
+}
+
+bool OSExchangeDataProviderAndroid::GetFilename(base::FilePath* path) const {
+  return false;
+}
+
+bool OSExchangeDataProviderAndroid::GetFilenames(
+    std::vector<ui::FileInfo>* filenames) const {
+  return false;
+}
+
+bool OSExchangeDataProviderAndroid::GetPickledData(
+    const ui::Clipboard::FormatType& format,
+    base::Pickle* pickle) const {
+  return false;
+}
+
+bool OSExchangeDataProviderAndroid::HasString() const {
+  return (formats_ & OSExchangeData::STRING) != 0;
+}
+
+bool OSExchangeDataProviderAndroid::HasURL(
+    ui::OSExchangeData::FilenameToURLPolicy policy) const {
+  return false;
+}
+
+bool OSExchangeDataProviderAndroid::HasFile() const {
+  return false;
+}
+
+bool OSExchangeDataProviderAndroid::HasCustomFormat(
+    const ui::Clipboard::FormatType& format) const {
+  return false;
+}
+
+// static
+OSExchangeData::Provider* OSExchangeData::CreateProvider() {
+  return new OSExchangeDataProviderAndroid();
+}
+
+}  // namespace ui