Initial implementation of WebUI generator (WUG) toolkit.

components/webui_generator/generator/wug.gypi

Index: components/webui_generator/generator/wug.gypi
diff --git a/components/webui_generator/generator/wug.gypi b/components/webui_generator/generator/wug.gypi
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+# Copyright (c) 2015 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.
+
+# This file included into a targets definition creates a target that generates
+# native and HTML/JS supporting code for Web UI element from element's
+# declaration JSON file.
+#
+# Example:
+# 'targets': [
+#   ...
+#   {
+#     'variables': {
+#       'declaration_file': 'path/to/file.json'
+#     }
+#     'includes': ['path/to/this/file.gypi']
+#   },
+#   ...
+# ]
+#
+# Such inclusion creates a target, which name is deduced from declaration file
+# name by removing extension and adding '_wug_generated' prefix, e.g. for
+# declaration file named 'some_type.json' will be created target named
+# 'some_type_wug_generated'. This is needed to properly handle dependencies
+# between declaration files and their imports.
+#
+# For declaration file with a full path 'src/full/path/some_type.json' 5 files
+# will be generated and compiled:
+#   <(SHARED_INTERMEDIATE_DIR)/wug/full/path/some_type_export.h
+#   <(SHARED_INTERMEDIATE_DIR)/wug/full/path/some_type_view.h
+#   <(SHARED_INTERMEDIATE_DIR)/wug/full/path/some_type_view_model.cc
+#   <(SHARED_INTERMEDIATE_DIR)/wug/full/path/some_type_view_model.h
+#   <(SHARED_INTERMEDIATE_DIR)/wug/full/path/some_type_webui_view.cc
+
+{
+  'variables': {
+    'generator_dir': '<(DEPTH)/components/webui_generator/generator',
+    'helper_path': '<(generator_dir)/build_helper.py',
+    'generator_path': '<(generator_dir)/gen_sources.py',
+    'out_dir': '<(SHARED_INTERMEDIATE_DIR)/wug',
+    'helper_cl': 'python <(helper_path) --root=<(DEPTH) <(declaration_file)',
+    'dirname': '<(out_dir)/<!(<(helper_cl) --output=dirname)',
+    'view_cc': '<(dirname)/<!(<(helper_cl) --output=view_cc)',
+    'view_h': '<(dirname)/<!(<(helper_cl) --output=view_h)',
+    'model_cc': '<(dirname)/<!(<(helper_cl) --output=model_cc)',
+    'model_h': '<(dirname)/<!(<(helper_cl) --output=model_h)',
+    'export_h': '<(dirname)/<!(<(helper_cl) --output=export_h)',
+    'export_h': '<(dirname)/<!(<(helper_cl) --output=export_h)',
+    'impl_macro': '<!(<(helper_cl) --output=impl_macro)',
+  },
+  'target_name': '<!(<(helper_cl) --output=target_name)',
+  'type': '<(component)',
+  'sources': [
+    '<(view_cc)',
+    '<(view_h)',
+    '<(model_cc)',
+    '<(model_h)',
+    '<(export_h)',
+  ],
+  'defines': [
+    '<(impl_macro)',
+  ],
+  'actions': [
+    {
+      'action_name': 'gen_files',
+      'inputs': [
+        '<(generator_path)',
+        '<(generator_dir)/declaration.py',
+        '<(generator_dir)/export_h.py',
+        '<(generator_dir)/html_view.py',
+        '<(generator_dir)/util.py',
+        '<(generator_dir)/view_model.py',
+        '<(generator_dir)/web_ui_view.py',
+        '<(declaration_file)',
+      ],
+      'outputs': [
+        '<(view_cc)',
+        '<(view_h)',
+        '<(model_cc)',
+        '<(model_h)',
+        '<(export_h)',
+      ],
+      'action': [
+        'python',
+        '<(generator_path)',
+        '--root=<(DEPTH)',
+        '--destination=<(out_dir)',
+        '<(declaration_file)'
+      ],
+      'message': 'Generating C++ code from <(declaration_file).',
+    },
+  ],
+  'dependencies': [
+    '<(DEPTH)/base/base.gyp:base',
+    '<(DEPTH)/components/components.gyp:login',
+    '<(DEPTH)/components/components.gyp:webui_generator',
+    '<(DEPTH)/components/components_strings.gyp:components_strings',
+    '<(DEPTH)/skia/skia.gyp:skia',
+    '<!@(<(helper_cl) --output=import_dependencies)',
+  ],
+  'include_dirs': [
+    '<(DEPTH)',
+    '<(out_dir)',
+  ],
+  'all_dependent_settings': {
+    'include_dirs': [
+      '<(DEPTH)',
+      '<(out_dir)',
+    ],
+  },
+  'export_dependent_settings': [
+    '<(DEPTH)/components/components.gyp:webui_generator',
+    '<(DEPTH)/components/components.gyp:login',
+  ],
+  # This target exports a hard dependency because it generates header
+  # files.
+  'hard_dependency': 1,
+}