// Copyright (c) 2010 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 "chrome/browser/gtk/options/content_exception_editor.h"

#include "app/l10n_util.h"
#include "app/resource_bundle.h"
#include "base/message_loop.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/content_exceptions_table_model.h"
#include "chrome/browser/gtk/gtk_util.h"
#include "chrome/browser/host_content_settings_map.h"
#include "grit/app_resources.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"

ContentExceptionEditor::ContentExceptionEditor(
    GtkWindow* parent,
    ContentExceptionEditor::Delegate* delegate,
    ContentExceptionsTableModel* model,
    bool allow_off_the_record,
    int index,
    const HostContentSettingsMap::Pattern& pattern,
    ContentSetting setting,
    bool is_off_the_record)
    : delegate_(delegate),
      model_(model),
      cb_model_(model->content_type()),
      index_(index),
      pattern_(pattern),
      setting_(setting) {
  dialog_ = gtk_dialog_new_with_buttons(
      l10n_util::GetStringUTF8(is_new() ?
                               IDS_EXCEPTION_EDITOR_NEW_TITLE :
                               IDS_EXCEPTION_EDITOR_TITLE).c_str(),
      parent,
      // Non-modal.
      static_cast<GtkDialogFlags>(GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR),
      GTK_STOCK_CANCEL,
      GTK_RESPONSE_CANCEL,
      GTK_STOCK_OK,
      GTK_RESPONSE_OK,
      NULL);
  gtk_dialog_set_default_response(GTK_DIALOG(dialog_), GTK_RESPONSE_OK);

  entry_ = gtk_entry_new();
  gtk_entry_set_text(GTK_ENTRY(entry_), pattern_.AsString().c_str());
  g_signal_connect(entry_, "changed", G_CALLBACK(OnEntryChangedThunk), this);
  gtk_entry_set_activates_default(GTK_ENTRY(entry_), TRUE);

  pattern_image_ = gtk_image_new_from_pixbuf(NULL);

  action_combo_ = gtk_combo_box_new_text();
  for (int i = 0; i < cb_model_.GetItemCount(); ++i) {
    gtk_combo_box_append_text(GTK_COMBO_BOX(action_combo_),
        UTF16ToUTF8(cb_model_.GetItemAt(i)).c_str());
  }
  gtk_combo_box_set_active(GTK_COMBO_BOX(action_combo_),
                           cb_model_.IndexForSetting(setting_));

  otr_checkbox_ = gtk_check_button_new_with_label(
      l10n_util::GetStringUTF8(IDS_EXCEPTION_EDITOR_OTR_TITLE).c_str());
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(otr_checkbox_),
                               is_off_the_record);

  GtkWidget* table = gtk_util::CreateLabeledControlsGroup(
      NULL,
      l10n_util::GetStringUTF8(IDS_EXCEPTION_EDITOR_PATTERN_TITLE).c_str(),
      gtk_util::CreateEntryImageHBox(entry_, pattern_image_),
      l10n_util::GetStringUTF8(IDS_EXCEPTION_EDITOR_ACTION_TITLE).c_str(),
      action_combo_,
      NULL);
  if (allow_off_the_record) {
    gtk_table_attach(GTK_TABLE(table), otr_checkbox_,
                     0, 2, 2, 3, GTK_FILL, GTK_FILL, 0, 0);
  }
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog_)->vbox), table,
                     FALSE, FALSE, 0);

  gtk_box_set_spacing(GTK_BOX(GTK_DIALOG(dialog_)->vbox),
                      gtk_util::kContentAreaSpacing);

  // Prime the state of the buttons.
  OnEntryChanged(entry_);

  gtk_util::ShowDialog(dialog_);

  g_signal_connect(dialog_, "response", G_CALLBACK(OnResponseThunk), this);
  g_signal_connect(dialog_, "destroy", G_CALLBACK(OnWindowDestroyThunk), this);
}

bool ContentExceptionEditor::IsPatternValid(
    const HostContentSettingsMap::Pattern& pattern,
    bool is_off_the_record) const {
  bool is_valid_pattern = pattern.IsValid() &&
      (model_->IndexOfExceptionByPattern(pattern, is_off_the_record) == -1);

  return is_new() ? is_valid_pattern : (!pattern.AsString().empty() &&
      ((pattern_ == pattern) || is_valid_pattern));
}

void ContentExceptionEditor::UpdateImage(GtkWidget* image, bool is_valid) {
  return gtk_image_set_from_pixbuf(GTK_IMAGE(image),
      ResourceBundle::GetSharedInstance().GetPixbufNamed(
          is_valid ? IDR_INPUT_GOOD : IDR_INPUT_ALERT));
}

void ContentExceptionEditor::OnEntryChanged(GtkWidget* entry) {
  HostContentSettingsMap::Pattern new_pattern(
      gtk_entry_get_text(GTK_ENTRY(entry)));
  bool is_off_the_record =
      gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(otr_checkbox_));
  bool is_valid = IsPatternValid(new_pattern, is_off_the_record);
  gtk_dialog_set_response_sensitive(GTK_DIALOG(dialog_),
                                    GTK_RESPONSE_OK, is_valid);
  UpdateImage(pattern_image_, is_valid);
}

void ContentExceptionEditor::OnResponse(GtkWidget* sender, int response_id) {
  if (response_id == GTK_RESPONSE_OK) {
    // Notify our delegate to update everything.
    HostContentSettingsMap::Pattern new_pattern(
        gtk_entry_get_text(GTK_ENTRY(entry_)));
    ContentSetting setting = cb_model_.SettingForIndex(
        gtk_combo_box_get_active(GTK_COMBO_BOX(action_combo_)));
    bool is_off_the_record =
        gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(otr_checkbox_));
    delegate_->AcceptExceptionEdit(
        new_pattern, setting, is_off_the_record, index_, is_new());
  }

  gtk_widget_destroy(dialog_);
}

void ContentExceptionEditor::OnWindowDestroy(GtkWidget* widget) {
  MessageLoop::current()->DeleteSoon(FROM_HERE, this);
}