| // 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. |
| |
| // A helper function for using JsTemplate. See jstemplate_builder.h for more |
| // info. |
| |
| #include "ui/webui/jstemplate_builder.h" |
| |
| #include "base/json/json_file_value_serializer.h" |
| #include "base/json/json_string_value_serializer.h" |
| #include "base/logging.h" |
| #include "base/strings/string_util.h" |
| #include "grit/webui_resources.h" |
| #include "ui/base/layout.h" |
| #include "ui/base/resource/resource_bundle.h" |
| |
| namespace { |
| |
| // Non-zero when building version 2 templates. See UseVersion2 class. |
| int g_version2 = 0; |
| |
| } // namespace |
| |
| namespace webui { |
| |
| UseVersion2::UseVersion2() { |
| g_version2++; |
| } |
| |
| UseVersion2::~UseVersion2() { |
| g_version2--; |
| } |
| |
| std::string GetTemplateHtml(const base::StringPiece& html_template, |
| const base::DictionaryValue* json, |
| const base::StringPiece& template_id) { |
| std::string output(html_template.data(), html_template.size()); |
| AppendJsonHtml(json, &output); |
| AppendJsTemplateSourceHtml(&output); |
| AppendJsTemplateProcessHtml(template_id, &output); |
| return output; |
| } |
| |
| std::string GetI18nTemplateHtml(const base::StringPiece& html_template, |
| const base::DictionaryValue* json) { |
| std::string output(html_template.data(), html_template.size()); |
| AppendJsonHtml(json, &output); |
| AppendI18nTemplateSourceHtml(&output); |
| AppendI18nTemplateProcessHtml(&output); |
| return output; |
| } |
| |
| std::string GetTemplatesHtml(const base::StringPiece& html_template, |
| const base::DictionaryValue* json, |
| const base::StringPiece& template_id) { |
| std::string output(html_template.data(), html_template.size()); |
| AppendI18nTemplateSourceHtml(&output); |
| AppendJsTemplateSourceHtml(&output); |
| AppendJsonHtml(json, &output); |
| AppendI18nTemplateProcessHtml(&output); |
| AppendJsTemplateProcessHtml(template_id, &output); |
| return output; |
| } |
| |
| void AppendJsonHtml(const base::DictionaryValue* json, std::string* output) { |
| std::string javascript_string; |
| AppendJsonJS(json, &javascript_string); |
| |
| // </ confuses the HTML parser because it could be a </script> tag. So we |
| // replace </ with <\/. The extra \ will be ignored by the JS engine. |
| ReplaceSubstringsAfterOffset(&javascript_string, 0, "</", "<\\/"); |
| |
| output->append("<script>"); |
| output->append(javascript_string); |
| output->append("</script>"); |
| } |
| |
| void AppendJsonJS(const base::DictionaryValue* json, std::string* output) { |
| // Convert the template data to a json string. |
| DCHECK(json) << "must include json data structure"; |
| |
| std::string jstext; |
| JSONStringValueSerializer serializer(&jstext); |
| serializer.Serialize(*json); |
| output->append(g_version2 ? "loadTimeData.data = " : "var templateData = "); |
| output->append(jstext); |
| output->append(";"); |
| } |
| |
| void AppendJsTemplateSourceHtml(std::string* output) { |
| // fetch and cache the pointer of the jstemplate resource source text. |
| static const base::StringPiece jstemplate_src( |
| ResourceBundle::GetSharedInstance().GetRawDataResource( |
| IDR_WEBUI_JSTEMPLATE_JS)); |
| |
| if (jstemplate_src.empty()) { |
| NOTREACHED() << "Unable to get jstemplate src"; |
| return; |
| } |
| |
| output->append("<script>"); |
| output->append(jstemplate_src.data(), jstemplate_src.size()); |
| output->append("</script>"); |
| } |
| |
| void AppendJsTemplateProcessHtml(const base::StringPiece& template_id, |
| std::string* output) { |
| output->append("<script>"); |
| output->append("var tp = document.getElementById('"); |
| output->append(template_id.data(), template_id.size()); |
| output->append("');"); |
| output->append("jstProcess(new JsEvalContext(templateData), tp);"); |
| output->append("</script>"); |
| } |
| |
| void AppendI18nTemplateSourceHtml(std::string* output) { |
| // fetch and cache the pointer of the jstemplate resource source text. |
| static const base::StringPiece i18n_template_src( |
| ResourceBundle::GetSharedInstance().GetRawDataResource( |
| IDR_WEBUI_I18N_TEMPLATE_JS)); |
| static const base::StringPiece i18n_template2_src( |
| ResourceBundle::GetSharedInstance().GetRawDataResource( |
| IDR_WEBUI_I18N_TEMPLATE2_JS)); |
| const base::StringPiece* template_src = g_version2 ? |
| &i18n_template2_src : &i18n_template_src; |
| |
| if (template_src->empty()) { |
| NOTREACHED() << "Unable to get i18n template src"; |
| return; |
| } |
| |
| output->append("<script>"); |
| output->append(template_src->data(), template_src->size()); |
| output->append("</script>"); |
| } |
| |
| void AppendI18nTemplateProcessHtml(std::string* output) { |
| if (g_version2) |
| return; |
| |
| static const base::StringPiece i18n_process_src( |
| ResourceBundle::GetSharedInstance().GetRawDataResource( |
| IDR_WEBUI_I18N_PROCESS_JS)); |
| |
| if (i18n_process_src.empty()) { |
| NOTREACHED() << "Unable to get i18n process src"; |
| return; |
| } |
| |
| output->append("<script>"); |
| output->append(i18n_process_src.data(), i18n_process_src.size()); |
| output->append("</script>"); |
| } |
| |
| } // namespace webui |