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// Copyright (c) 2012 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 "chromeos/dbus/ibus/ibus_text.h"
#include "base/logging.h"
#include "base/values.h"
#include "chromeos/dbus/ibus/ibus_object.h"
#include "dbus/message.h"
namespace chromeos {
// TODO(nona): Remove ibus namespace after complete libibus removal.
namespace ibus {
namespace {
const uint32 kAttributeUnderline = 1; // Indicates underline attribute.
const uint32 kAttributeSelection = 2; // Indicates background attribute.
const char kAnnotationKey[] = "annotation";
const char kDescriptionTitleKey[] = "description_title";
const char kDescriptionBodyKey[] = "description_body";
struct IBusAttribute {
IBusAttribute() : type(0), value(0), start_index(0), end_index(0) {}
uint32 type;
uint32 value;
uint32 start_index;
uint32 end_index;
};
// Pops a IBusAttribute from |reader|.
// Returns false if an error is occures.
bool PopIBusAttribute(dbus::MessageReader* reader, IBusAttribute* attribute) {
IBusObjectReader ibus_object_reader("IBusAttribute", reader);
if (!ibus_object_reader.Init())
return false;
if (!ibus_object_reader.PopUint32(&attribute->type) ||
!ibus_object_reader.PopUint32(&attribute->value) ||
!ibus_object_reader.PopUint32(&attribute->start_index) ||
!ibus_object_reader.PopUint32(&attribute->end_index)) {
LOG(ERROR) << "Invalid variant structure[IBusAttribute]: "
<< "IBusAttribute should contain 4 unsigned integers.";
return false;
}
return true;
}
// Appends a IBusAttribute into |writer|.
void AppendIBusAttribute(dbus::MessageWriter* writer,
const IBusAttribute& attribute) {
IBusObjectWriter ibus_attribute_writer("IBusAttribute", "uuuu", writer);
ibus_attribute_writer.CloseHeader();
ibus_attribute_writer.AppendUint32(attribute.type);
ibus_attribute_writer.AppendUint32(attribute.value);
ibus_attribute_writer.AppendUint32(attribute.start_index);
ibus_attribute_writer.AppendUint32(attribute.end_index);
ibus_attribute_writer.CloseAll();
}
} // namespace
void AppendIBusText(const IBusText& ibus_text, dbus::MessageWriter* writer) {
IBusObjectWriter ibus_text_writer("IBusText", "sv", writer);
if (!ibus_text.annotation().empty()) {
scoped_ptr<base::Value> annotation(
base::Value::CreateStringValue(ibus_text.annotation()));
ibus_text_writer.AddAttachment(kAnnotationKey, *annotation.get());
}
if (!ibus_text.description_title().empty()) {
scoped_ptr<base::Value> description_title(
base::Value::CreateStringValue(ibus_text.description_title()));
ibus_text_writer.AddAttachment(kDescriptionTitleKey,
*description_title.get());
}
if (!ibus_text.description_body().empty()) {
scoped_ptr<base::Value> description_body(
base::Value::CreateStringValue(ibus_text.description_body()));
ibus_text_writer.AddAttachment(kDescriptionBodyKey,
*description_body.get());
}
ibus_text_writer.CloseHeader();
ibus_text_writer.AppendString(ibus_text.text());
// Start appending IBusAttrList into IBusText
IBusObjectWriter ibus_attr_list_writer("IBusAttrList", "av", NULL);
ibus_text_writer.AppendIBusObject(&ibus_attr_list_writer);
ibus_attr_list_writer.CloseHeader();
dbus::MessageWriter attribute_array_writer(NULL);
ibus_attr_list_writer.OpenArray("v", &attribute_array_writer);
const std::vector<IBusText::UnderlineAttribute>& underline_attributes =
ibus_text.underline_attributes();
for (size_t i = 0; i < underline_attributes.size(); ++i) {
IBusAttribute attribute;
attribute.type = kAttributeUnderline;
attribute.value = static_cast<uint32>(underline_attributes[i].type);
attribute.start_index = underline_attributes[i].start_index;
attribute.end_index = underline_attributes[i].end_index;
AppendIBusAttribute(&attribute_array_writer, attribute);
}
const std::vector<IBusText::SelectionAttribute>& selection_attributes =
ibus_text.selection_attributes();
for (size_t i = 0; i < selection_attributes.size(); ++i) {
IBusAttribute attribute;
attribute.type = kAttributeSelection;
attribute.value = 0;
attribute.start_index = selection_attributes[i].start_index;
attribute.end_index = selection_attributes[i].end_index;
AppendIBusAttribute(&attribute_array_writer, attribute);
}
// Close all writers.
ibus_attr_list_writer.CloseContainer(&attribute_array_writer);
ibus_attr_list_writer.CloseAll();
ibus_text_writer.CloseAll();
}
void CHROMEOS_EXPORT AppendStringAsIBusText(const std::string& text,
dbus::MessageWriter* writer) {
IBusText ibus_text;
ibus_text.set_text(text);
AppendIBusText(ibus_text, writer);
}
bool PopIBusText(dbus::MessageReader* reader, IBusText* ibus_text) {
IBusObjectReader ibus_text_reader("IBusText", reader);
if (!ibus_text_reader.Init())
return false;
const base::Value* annotation_value =
ibus_text_reader.GetAttachment(kAnnotationKey);
if (annotation_value) {
std::string annotation;
if (annotation_value->GetAsString(&annotation))
ibus_text->set_annotation(annotation);
}
const base::Value* description_title_value =
ibus_text_reader.GetAttachment(kDescriptionTitleKey);
if (description_title_value) {
std::string description_title;
if (description_title_value->GetAsString(&description_title))
ibus_text->set_description_title(description_title);
}
const base::Value* description_body_value =
ibus_text_reader.GetAttachment(kDescriptionBodyKey);
if (description_body_value) {
std::string description_body;
if (description_body_value->GetAsString(&description_body))
ibus_text->set_description_body(description_body);
}
std::string text;
if (!ibus_text_reader.PopString(&text)) {
LOG(ERROR) << "Invalid variant structure[IBusText]: "
<< "1st argument should be string.";
return false;
}
ibus_text->set_text(text);
// Start reading IBusAttrList object
IBusObjectReader ibus_attr_list_reader("IBusAttrList", NULL);
if (!ibus_text_reader.PopIBusObject(&ibus_attr_list_reader)) {
LOG(ERROR) << "Invalid variant structure[IBusText]: "
<< "2nd argument should be IBusAttrList.";
return false;
}
dbus::MessageReader attribute_array_reader(NULL);
if (!ibus_attr_list_reader.PopArray(&attribute_array_reader)) {
LOG(ERROR) << "Invalid variant structure[IBusAttrList]: "
<< "1st argument should be array of IBusAttribute.";
return false;
}
std::vector<IBusText::UnderlineAttribute>* underline_attributes =
ibus_text->mutable_underline_attributes();
std::vector<IBusText::SelectionAttribute>* selection_attributes =
ibus_text->mutable_selection_attributes();
while (attribute_array_reader.HasMoreData()) {
IBusAttribute attribute;
if (!PopIBusAttribute(&attribute_array_reader, &attribute))
return false;
if (attribute.type == kAttributeUnderline) {
IBusText::UnderlineAttribute underline_attribute;
underline_attribute.type =
static_cast<IBusText::IBusTextUnderlineType>(attribute.value);
underline_attribute.start_index = attribute.start_index;
underline_attribute.end_index = attribute.end_index;
underline_attributes->push_back(underline_attribute);
} else if (attribute.type == kAttributeSelection) {
IBusText::SelectionAttribute selection_attribute;
selection_attribute.start_index = attribute.start_index;
selection_attribute.end_index = attribute.end_index;
selection_attributes->push_back(selection_attribute);
} else {
DVLOG(1) << "Chrome does not support background attribute.";
}
}
return true;
}
bool CHROMEOS_EXPORT PopStringFromIBusText(dbus::MessageReader* reader,
std::string* text) {
IBusText ibus_text;
if(!PopIBusText(reader, &ibus_text))
return false;
*text = ibus_text.text();
return true;
}
///////////////////////////////////////////////////////////////////////////////
// IBusText
IBusText::IBusText()
: text_("") {
}
IBusText::~IBusText() {
}
} // namespace ibus
} // namespace chromeos
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