It is time.

ui/views/controls/prefix_selector.cc

-// Copyright 2013 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/controls/prefix_selector.h"
-
-#include "base/i18n/case_conversion.h"
-#include "ui/base/ime/text_input_type.h"
-#include "ui/gfx/range/range.h"
-#include "ui/views/controls/prefix_delegate.h"
-#include "ui/views/widget/widget.h"
-
-namespace views {
-
-namespace {
-
-const int64 kTimeBeforeClearingMS = 1000;
-
-void ConvertRectToScreen(const views::View* src, gfx::Rect* r) {
-  DCHECK(src);
-
-  gfx::Point new_origin = r->origin();
-  views::View::ConvertPointToScreen(src, &new_origin);
-  r->set_origin(new_origin);
-}
-
-}  // namespace
-
-PrefixSelector::PrefixSelector(PrefixDelegate* delegate)
-    : prefix_delegate_(delegate) {
-}
-
-PrefixSelector::~PrefixSelector() {
-}
-
-void PrefixSelector::OnViewBlur() {
-  ClearText();
-}
-
-void PrefixSelector::SetCompositionText(
-    const ui::CompositionText& composition) {
-}
-
-void PrefixSelector::ConfirmCompositionText() {
-}
-
-void PrefixSelector::ClearCompositionText() {
-}
-
-void PrefixSelector::InsertText(const base::string16& text) {
-  OnTextInput(text);
-}
-
-void PrefixSelector::InsertChar(base::char16 ch, int flags) {
-  OnTextInput(base::string16(1, ch));
-}
-
-gfx::NativeWindow PrefixSelector::GetAttachedWindow() const {
-  return prefix_delegate_->GetWidget()->GetNativeWindow();
-}
-
-ui::TextInputType PrefixSelector::GetTextInputType() const {
-  return ui::TEXT_INPUT_TYPE_TEXT;
-}
-
-ui::TextInputMode PrefixSelector::GetTextInputMode() const {
-  return ui::TEXT_INPUT_MODE_DEFAULT;
-}
-
-bool PrefixSelector::CanComposeInline() const {
-  return false;
-}
-
-gfx::Rect PrefixSelector::GetCaretBounds() const {
-  gfx::Rect rect(prefix_delegate_->GetVisibleBounds().origin(), gfx::Size());
-  // TextInputClient::GetCaretBounds is expected to return a value in screen
-  // coordinates.
-  ConvertRectToScreen(prefix_delegate_, &rect);
-  return rect;
-}
-
-bool PrefixSelector::GetCompositionCharacterBounds(uint32 index,
-                                                   gfx::Rect* rect) const {
-  // TextInputClient::GetCompositionCharacterBounds is expected to fill |rect|
-  // in screen coordinates and GetCaretBounds returns screen coordinates.
-  *rect = GetCaretBounds();
-  return false;
-}
-
-bool PrefixSelector::HasCompositionText() const {
-  return false;
-}
-
-bool PrefixSelector::GetTextRange(gfx::Range* range) const {
-  *range = gfx::Range();
-  return false;
-}
-
-bool PrefixSelector::GetCompositionTextRange(gfx::Range* range) const {
-  *range = gfx::Range();
-  return false;
-}
-
-bool PrefixSelector::GetSelectionRange(gfx::Range* range) const {
-  *range = gfx::Range();
-  return false;
-}
-
-bool PrefixSelector::SetSelectionRange(const gfx::Range& range) {
-  return false;
-}
-
-bool PrefixSelector::DeleteRange(const gfx::Range& range) {
-  return false;
-}
-
-bool PrefixSelector::GetTextFromRange(const gfx::Range& range,
-                                        base::string16* text) const {
-  return false;
-}
-
-void PrefixSelector::OnInputMethodChanged() {
-  ClearText();
-}
-
-bool PrefixSelector::ChangeTextDirectionAndLayoutAlignment(
-    base::i18n::TextDirection direction) {
-  return true;
-}
-
-void PrefixSelector::ExtendSelectionAndDelete(size_t before, size_t after) {
-}
-
-void PrefixSelector::EnsureCaretInRect(const gfx::Rect& rect) {
-}
-
-void PrefixSelector::OnCandidateWindowShown() {
-}
-
-void PrefixSelector::OnCandidateWindowUpdated() {
-}
-
-void PrefixSelector::OnCandidateWindowHidden() {
-}
-
-bool PrefixSelector::IsEditingCommandEnabled(int command_id) {
-  return false;
-}
-
-void PrefixSelector::ExecuteEditingCommand(int command_id) {
-}
-
-void PrefixSelector::OnTextInput(const base::string16& text) {
-  // Small hack to filter out 'tab' and 'enter' input, as the expectation is
-  // that they are control characters and will not affect the currently-active
-  // prefix.
-  if (text.length() == 1 &&
-      (text[0] == L'\t' || text[0] == L'\r' || text[0] == L'\n'))
-    return;
-
-  const int row_count = prefix_delegate_->GetRowCount();
-  if (row_count == 0)
-    return;
-
-  // Search for |text| if it has been a while since the user typed, otherwise
-  // append |text| to |current_text_| and search for that. If it has been a
-  // while search after the current row, otherwise search starting from the
-  // current row.
-  int row = std::max(0, prefix_delegate_->GetSelectedRow());
-  const base::TimeTicks now(base::TimeTicks::Now());
-  if ((now - time_of_last_key_).InMilliseconds() < kTimeBeforeClearingMS) {
-    current_text_ += text;
-  } else {
-    current_text_ = text;
-    if (prefix_delegate_->GetSelectedRow() >= 0)
-      row = (row + 1) % row_count;
-  }
-  time_of_last_key_ = now;
-
-  const int start_row = row;
-  const base::string16 lower_text(base::i18n::ToLower(current_text_));
-  do {
-    if (TextAtRowMatchesText(row, lower_text)) {
-      prefix_delegate_->SetSelectedRow(row);
-      return;
-    }
-    row = (row + 1) % row_count;
-  } while (row != start_row);
-}
-
-bool PrefixSelector::TextAtRowMatchesText(int row,
-                                          const base::string16& lower_text) {
-  const base::string16 model_text(
-      base::i18n::ToLower(prefix_delegate_->GetTextForRow(row)));
-  return (model_text.size() >= lower_text.size()) &&
-      (model_text.compare(0, lower_text.size(), lower_text) == 0);
-}
-
-void PrefixSelector::ClearText() {
-  current_text_.clear();
-  time_of_last_key_ = base::TimeTicks();
-}
-
-}  // namespace views