electron/shell/common/gin_converters/blink_converter.cc

506 lines
19 KiB
C++

// Copyright (c) 2015 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/common/gin_converters/blink_converter.h"
#include <algorithm>
#include <string>
#include <utility>
#include <vector>
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "gin/converter.h"
#include "shell/common/gin_converters/gfx_converter.h"
#include "shell/common/gin_converters/value_converter.h"
#include "shell/common/gin_helper/dictionary.h"
#include "shell/common/keyboard_util.h"
#include "shell/common/v8_value_serializer.h"
#include "third_party/blink/public/common/context_menu_data/edit_flags.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/common/input/web_keyboard_event.h"
#include "third_party/blink/public/common/input/web_mouse_event.h"
#include "third_party/blink/public/common/input/web_mouse_wheel_event.h"
#include "third_party/blink/public/common/widget/device_emulation_params.h"
#include "third_party/blink/public/platform/web_size.h"
#include "ui/base/clipboard/clipboard.h"
#include "ui/events/blink/blink_event_util.h"
#include "ui/events/keycodes/dom/keycode_converter.h"
#include "ui/events/keycodes/keyboard_code_conversion.h"
namespace {
template <typename T>
int VectorToBitArray(const std::vector<T>& vec) {
int bits = 0;
for (const T& item : vec)
bits |= item;
return bits;
}
} // namespace
namespace gin {
template <>
struct Converter<base::char16> {
static bool FromV8(v8::Isolate* isolate,
v8::Handle<v8::Value> val,
base::char16* out) {
base::string16 code = base::UTF8ToUTF16(gin::V8ToString(isolate, val));
if (code.length() != 1)
return false;
*out = code[0];
return true;
}
};
template <>
struct Converter<blink::WebInputEvent::Type> {
static bool FromV8(v8::Isolate* isolate,
v8::Handle<v8::Value> val,
blink::WebInputEvent::Type* out) {
std::string type = base::ToLowerASCII(gin::V8ToString(isolate, val));
if (type == "mousedown")
*out = blink::WebInputEvent::Type::kMouseDown;
else if (type == "mouseup")
*out = blink::WebInputEvent::Type::kMouseUp;
else if (type == "mousemove")
*out = blink::WebInputEvent::Type::kMouseMove;
else if (type == "mouseenter")
*out = blink::WebInputEvent::Type::kMouseEnter;
else if (type == "mouseleave")
*out = blink::WebInputEvent::Type::kMouseLeave;
else if (type == "contextmenu")
*out = blink::WebInputEvent::Type::kContextMenu;
else if (type == "mousewheel")
*out = blink::WebInputEvent::Type::kMouseWheel;
else if (type == "keydown")
*out = blink::WebInputEvent::Type::kRawKeyDown;
else if (type == "keyup")
*out = blink::WebInputEvent::Type::kKeyUp;
else if (type == "char")
*out = blink::WebInputEvent::Type::kChar;
else if (type == "touchstart")
*out = blink::WebInputEvent::Type::kTouchStart;
else if (type == "touchmove")
*out = blink::WebInputEvent::Type::kTouchMove;
else if (type == "touchend")
*out = blink::WebInputEvent::Type::kTouchEnd;
else if (type == "touchcancel")
*out = blink::WebInputEvent::Type::kTouchCancel;
return true;
}
};
template <>
struct Converter<blink::WebMouseEvent::Button> {
static bool FromV8(v8::Isolate* isolate,
v8::Handle<v8::Value> val,
blink::WebMouseEvent::Button* out) {
std::string button = base::ToLowerASCII(gin::V8ToString(isolate, val));
if (button == "left")
*out = blink::WebMouseEvent::Button::kLeft;
else if (button == "middle")
*out = blink::WebMouseEvent::Button::kMiddle;
else if (button == "right")
*out = blink::WebMouseEvent::Button::kRight;
else
return false;
return true;
}
};
template <>
struct Converter<blink::WebInputEvent::Modifiers> {
static bool FromV8(v8::Isolate* isolate,
v8::Handle<v8::Value> val,
blink::WebInputEvent::Modifiers* out) {
std::string modifier = base::ToLowerASCII(gin::V8ToString(isolate, val));
if (modifier == "shift")
*out = blink::WebInputEvent::Modifiers::kShiftKey;
else if (modifier == "control" || modifier == "ctrl")
*out = blink::WebInputEvent::Modifiers::kControlKey;
else if (modifier == "alt")
*out = blink::WebInputEvent::Modifiers::kAltKey;
else if (modifier == "meta" || modifier == "command" || modifier == "cmd")
*out = blink::WebInputEvent::Modifiers::kMetaKey;
else if (modifier == "iskeypad")
*out = blink::WebInputEvent::Modifiers::kIsKeyPad;
else if (modifier == "isautorepeat")
*out = blink::WebInputEvent::Modifiers::kIsAutoRepeat;
else if (modifier == "leftbuttondown")
*out = blink::WebInputEvent::Modifiers::kLeftButtonDown;
else if (modifier == "middlebuttondown")
*out = blink::WebInputEvent::Modifiers::kMiddleButtonDown;
else if (modifier == "rightbuttondown")
*out = blink::WebInputEvent::Modifiers::kRightButtonDown;
else if (modifier == "capslock")
*out = blink::WebInputEvent::Modifiers::kCapsLockOn;
else if (modifier == "numlock")
*out = blink::WebInputEvent::Modifiers::kNumLockOn;
else if (modifier == "left")
*out = blink::WebInputEvent::Modifiers::kIsLeft;
else if (modifier == "right")
*out = blink::WebInputEvent::Modifiers::kIsRight;
return true;
}
};
blink::WebInputEvent::Type GetWebInputEventType(v8::Isolate* isolate,
v8::Local<v8::Value> val) {
blink::WebInputEvent::Type type = blink::WebInputEvent::Type::kUndefined;
gin_helper::Dictionary dict;
ConvertFromV8(isolate, val, &dict) && dict.Get("type", &type);
return type;
}
bool Converter<blink::WebInputEvent>::FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
blink::WebInputEvent* out) {
gin_helper::Dictionary dict;
if (!ConvertFromV8(isolate, val, &dict))
return false;
blink::WebInputEvent::Type type;
if (!dict.Get("type", &type))
return false;
out->SetType(type);
std::vector<blink::WebInputEvent::Modifiers> modifiers;
if (dict.Get("modifiers", &modifiers))
out->SetModifiers(VectorToBitArray(modifiers));
out->SetTimeStamp(base::TimeTicks::Now());
return true;
}
bool Converter<blink::WebKeyboardEvent>::FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
blink::WebKeyboardEvent* out) {
gin_helper::Dictionary dict;
if (!ConvertFromV8(isolate, val, &dict))
return false;
if (!ConvertFromV8(isolate, val, static_cast<blink::WebInputEvent*>(out)))
return false;
std::string str;
if (!dict.Get("keyCode", &str))
return false;
bool shifted = false;
ui::KeyboardCode keyCode = electron::KeyboardCodeFromStr(str, &shifted);
out->windows_key_code = keyCode;
if (shifted)
out->SetModifiers(out->GetModifiers() |
blink::WebInputEvent::Modifiers::kShiftKey);
ui::DomCode domCode = ui::UsLayoutKeyboardCodeToDomCode(keyCode);
out->dom_code = static_cast<int>(domCode);
ui::DomKey domKey;
ui::KeyboardCode dummy_code;
int flags = ui::WebEventModifiersToEventFlags(out->GetModifiers());
if (ui::DomCodeToUsLayoutDomKey(domCode, flags, &domKey, &dummy_code))
out->dom_key = static_cast<int>(domKey);
if ((out->GetType() == blink::WebInputEvent::Type::kChar ||
out->GetType() == blink::WebInputEvent::Type::kRawKeyDown)) {
// Make sure to not read beyond the buffer in case some bad code doesn't
// NULL-terminate it (this is called from plugins).
size_t text_length_cap = blink::WebKeyboardEvent::kTextLengthCap;
base::string16 text16 = base::UTF8ToUTF16(str);
std::fill_n(out->text, text_length_cap, 0);
std::fill_n(out->unmodified_text, text_length_cap, 0);
for (size_t i = 0; i < std::min(text_length_cap - 1, text16.size()); ++i) {
out->text[i] = text16[i];
out->unmodified_text[i] = text16[i];
}
}
return true;
}
bool Converter<blink::WebMouseEvent>::FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
blink::WebMouseEvent* out) {
gin_helper::Dictionary dict;
if (!ConvertFromV8(isolate, val, &dict))
return false;
if (!ConvertFromV8(isolate, val, static_cast<blink::WebInputEvent*>(out)))
return false;
float x = 0.f;
float y = 0.f;
if (!dict.Get("x", &x) || !dict.Get("y", &y))
return false;
out->SetPositionInWidget(x, y);
if (!dict.Get("button", &out->button))
out->button = blink::WebMouseEvent::Button::kLeft;
float global_x = 0.f;
float global_y = 0.f;
dict.Get("globalX", &global_x);
dict.Get("globalY", &global_y);
out->SetPositionInScreen(global_x, global_y);
dict.Get("movementX", &out->movement_x);
dict.Get("movementY", &out->movement_y);
dict.Get("clickCount", &out->click_count);
return true;
}
bool Converter<blink::WebMouseWheelEvent>::FromV8(
v8::Isolate* isolate,
v8::Local<v8::Value> val,
blink::WebMouseWheelEvent* out) {
gin_helper::Dictionary dict;
if (!ConvertFromV8(isolate, val, &dict))
return false;
if (!ConvertFromV8(isolate, val, static_cast<blink::WebMouseEvent*>(out)))
return false;
dict.Get("deltaX", &out->delta_x);
dict.Get("deltaY", &out->delta_y);
dict.Get("wheelTicksX", &out->wheel_ticks_x);
dict.Get("wheelTicksY", &out->wheel_ticks_y);
dict.Get("accelerationRatioX", &out->acceleration_ratio_x);
dict.Get("accelerationRatioY", &out->acceleration_ratio_y);
bool has_precise_scrolling_deltas = false;
dict.Get("hasPreciseScrollingDeltas", &has_precise_scrolling_deltas);
if (has_precise_scrolling_deltas) {
out->delta_units = ui::ScrollGranularity::kScrollByPrecisePixel;
} else {
out->delta_units = ui::ScrollGranularity::kScrollByPixel;
}
#if defined(USE_AURA)
// Matches the behavior of ui/events/blink/web_input_event_traits.cc:
bool can_scroll = true;
if (dict.Get("canScroll", &can_scroll) && !can_scroll) {
out->delta_units = ui::ScrollGranularity::kScrollByPage;
out->SetModifiers(out->GetModifiers() &
~blink::WebInputEvent::Modifiers::kControlKey);
}
#endif
return true;
}
bool Converter<blink::WebSize>::FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
blink::WebSize* out) {
gin_helper::Dictionary dict;
if (!ConvertFromV8(isolate, val, &dict))
return false;
return dict.Get("width", &out->width) && dict.Get("height", &out->height);
}
bool Converter<blink::DeviceEmulationParams>::FromV8(
v8::Isolate* isolate,
v8::Local<v8::Value> val,
blink::DeviceEmulationParams* out) {
gin_helper::Dictionary dict;
if (!ConvertFromV8(isolate, val, &dict))
return false;
std::string screen_type;
if (dict.Get("screenPosition", &screen_type)) {
screen_type = base::ToLowerASCII(screen_type);
if (screen_type == "mobile")
out->screen_type = blink::mojom::EmulatedScreenType::kMobile;
else if (screen_type == "desktop")
out->screen_type = blink::mojom::EmulatedScreenType::kDesktop;
else
return false;
}
dict.Get("screenSize", &out->screen_size);
gfx::Point view_position;
if (dict.Get("viewPosition", &view_position)) {
out->view_position = view_position;
}
dict.Get("deviceScaleFactor", &out->device_scale_factor);
dict.Get("viewSize", &out->view_size);
dict.Get("scale", &out->scale);
return true;
}
// static
v8::Local<v8::Value> Converter<blink::mojom::ContextMenuDataMediaType>::ToV8(
v8::Isolate* isolate,
const blink::mojom::ContextMenuDataMediaType& in) {
switch (in) {
case blink::mojom::ContextMenuDataMediaType::kImage:
return StringToV8(isolate, "image");
case blink::mojom::ContextMenuDataMediaType::kVideo:
return StringToV8(isolate, "video");
case blink::mojom::ContextMenuDataMediaType::kAudio:
return StringToV8(isolate, "audio");
case blink::mojom::ContextMenuDataMediaType::kCanvas:
return StringToV8(isolate, "canvas");
case blink::mojom::ContextMenuDataMediaType::kFile:
return StringToV8(isolate, "file");
case blink::mojom::ContextMenuDataMediaType::kPlugin:
return StringToV8(isolate, "plugin");
default:
return StringToV8(isolate, "none");
}
}
// static
v8::Local<v8::Value>
Converter<blink::mojom::ContextMenuDataInputFieldType>::ToV8(
v8::Isolate* isolate,
const blink::mojom::ContextMenuDataInputFieldType& in) {
switch (in) {
case blink::mojom::ContextMenuDataInputFieldType::kPlainText:
return StringToV8(isolate, "plainText");
case blink::mojom::ContextMenuDataInputFieldType::kPassword:
return StringToV8(isolate, "password");
case blink::mojom::ContextMenuDataInputFieldType::kOther:
return StringToV8(isolate, "other");
default:
return StringToV8(isolate, "none");
}
}
v8::Local<v8::Value> EditFlagsToV8(v8::Isolate* isolate, int editFlags) {
gin_helper::Dictionary dict = gin::Dictionary::CreateEmpty(isolate);
dict.Set("canUndo",
!!(editFlags & blink::ContextMenuDataEditFlags::kCanUndo));
dict.Set("canRedo",
!!(editFlags & blink::ContextMenuDataEditFlags::kCanRedo));
dict.Set("canCut", !!(editFlags & blink::ContextMenuDataEditFlags::kCanCut));
dict.Set("canCopy",
!!(editFlags & blink::ContextMenuDataEditFlags::kCanCopy));
bool pasteFlag = false;
if (editFlags & blink::ContextMenuDataEditFlags::kCanPaste) {
std::vector<base::string16> types;
ui::Clipboard::GetForCurrentThread()->ReadAvailableTypes(
ui::ClipboardBuffer::kCopyPaste, /* data_dst = */ nullptr, &types);
pasteFlag = !types.empty();
}
dict.Set("canPaste", pasteFlag);
dict.Set("canDelete",
!!(editFlags & blink::ContextMenuDataEditFlags::kCanDelete));
dict.Set("canSelectAll",
!!(editFlags & blink::ContextMenuDataEditFlags::kCanSelectAll));
dict.Set("canEditRichly",
!!(editFlags & blink::ContextMenuDataEditFlags::kCanEditRichly));
return ConvertToV8(isolate, dict);
}
v8::Local<v8::Value> MediaFlagsToV8(v8::Isolate* isolate, int mediaFlags) {
gin_helper::Dictionary dict = gin::Dictionary::CreateEmpty(isolate);
dict.Set("inError", !!(mediaFlags & blink::ContextMenuData::kMediaInError));
dict.Set("isPaused", !!(mediaFlags & blink::ContextMenuData::kMediaPaused));
dict.Set("isMuted", !!(mediaFlags & blink::ContextMenuData::kMediaMuted));
dict.Set("canSave", !!(mediaFlags & blink::ContextMenuData::kMediaCanSave));
dict.Set("hasAudio", !!(mediaFlags & blink::ContextMenuData::kMediaHasAudio));
dict.Set("isLooping", !!(mediaFlags & blink::ContextMenuData::kMediaLoop));
dict.Set("isControlsVisible",
!!(mediaFlags & blink::ContextMenuData::kMediaControls));
dict.Set("canToggleControls",
!!(mediaFlags & blink::ContextMenuData::kMediaCanToggleControls));
dict.Set("canPrint", !!(mediaFlags & blink::ContextMenuData::kMediaCanPrint));
dict.Set("canRotate",
!!(mediaFlags & blink::ContextMenuData::kMediaCanRotate));
dict.Set("canShowPictureInPicture",
!!(mediaFlags & blink::ContextMenuData::kMediaCanPictureInPicture));
dict.Set("isShowingPictureInPicture",
!!(mediaFlags & blink::ContextMenuData::kMediaPictureInPicture));
dict.Set("canLoop", !!(mediaFlags & blink::ContextMenuData::kMediaCanLoop));
return ConvertToV8(isolate, dict);
}
v8::Local<v8::Value> Converter<blink::WebCacheResourceTypeStat>::ToV8(
v8::Isolate* isolate,
const blink::WebCacheResourceTypeStat& stat) {
gin_helper::Dictionary dict = gin::Dictionary::CreateEmpty(isolate);
dict.Set("count", static_cast<uint32_t>(stat.count));
dict.Set("size", static_cast<double>(stat.size));
dict.Set("liveSize", static_cast<double>(stat.decoded_size));
return dict.GetHandle();
}
v8::Local<v8::Value> Converter<blink::WebCacheResourceTypeStats>::ToV8(
v8::Isolate* isolate,
const blink::WebCacheResourceTypeStats& stats) {
gin_helper::Dictionary dict = gin::Dictionary::CreateEmpty(isolate);
dict.Set("images", stats.images);
dict.Set("scripts", stats.scripts);
dict.Set("cssStyleSheets", stats.css_style_sheets);
dict.Set("xslStyleSheets", stats.xsl_style_sheets);
dict.Set("fonts", stats.fonts);
dict.Set("other", stats.other);
return dict.GetHandle();
}
// static
v8::Local<v8::Value> Converter<network::mojom::ReferrerPolicy>::ToV8(
v8::Isolate* isolate,
const network::mojom::ReferrerPolicy& in) {
switch (in) {
case network::mojom::ReferrerPolicy::kDefault:
return StringToV8(isolate, "default");
case network::mojom::ReferrerPolicy::kAlways:
return StringToV8(isolate, "unsafe-url");
case network::mojom::ReferrerPolicy::kNoReferrerWhenDowngrade:
return StringToV8(isolate, "no-referrer-when-downgrade");
case network::mojom::ReferrerPolicy::kNever:
return StringToV8(isolate, "no-referrer");
case network::mojom::ReferrerPolicy::kOrigin:
return StringToV8(isolate, "origin");
case network::mojom::ReferrerPolicy::kStrictOriginWhenCrossOrigin:
return StringToV8(isolate, "strict-origin-when-cross-origin");
case network::mojom::ReferrerPolicy::kSameOrigin:
return StringToV8(isolate, "same-origin");
case network::mojom::ReferrerPolicy::kStrictOrigin:
return StringToV8(isolate, "strict-origin");
default:
return StringToV8(isolate, "no-referrer");
}
}
// static
bool Converter<network::mojom::ReferrerPolicy>::FromV8(
v8::Isolate* isolate,
v8::Handle<v8::Value> val,
network::mojom::ReferrerPolicy* out) {
std::string policy = base::ToLowerASCII(gin::V8ToString(isolate, val));
if (policy == "default")
*out = network::mojom::ReferrerPolicy::kDefault;
else if (policy == "unsafe-url")
*out = network::mojom::ReferrerPolicy::kAlways;
else if (policy == "no-referrer-when-downgrade")
*out = network::mojom::ReferrerPolicy::kNoReferrerWhenDowngrade;
else if (policy == "no-referrer")
*out = network::mojom::ReferrerPolicy::kNever;
else if (policy == "origin")
*out = network::mojom::ReferrerPolicy::kOrigin;
else if (policy == "strict-origin-when-cross-origin")
*out = network::mojom::ReferrerPolicy::kStrictOriginWhenCrossOrigin;
else if (policy == "same-origin")
*out = network::mojom::ReferrerPolicy::kSameOrigin;
else if (policy == "strict-origin")
*out = network::mojom::ReferrerPolicy::kStrictOrigin;
else
return false;
return true;
}
v8::Local<v8::Value> Converter<blink::CloneableMessage>::ToV8(
v8::Isolate* isolate,
const blink::CloneableMessage& in) {
return electron::DeserializeV8Value(isolate, in);
}
bool Converter<blink::CloneableMessage>::FromV8(v8::Isolate* isolate,
v8::Handle<v8::Value> val,
blink::CloneableMessage* out) {
return electron::SerializeV8Value(isolate, val, out);
}
} // namespace gin