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| 106 <li><h2><a href="devguide.html">Developer's Guide</a></h2> | |
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| 108 <li>Browser UI | |
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| 127 <li><a href="tabs.html">Tabs</a></li> | |
| 128 <li><a href="windows.html">Windows</a></li> | |
| 129 </ul> | |
| 130 </li> | |
| 131 <li>Implementation | |
| 132 <ul> | |
| 133 <li><a href="a11y.html">Accessibility</a></li> | |
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| 139 <li><a href="permissions.html">Optional Permissions</a></li> | |
| 140 <li><a href="npapi.html">NPAPI Plugins</a></li> | |
| 141 </ul> | |
| 142 </li> | |
| 143 <li>Finishing | |
| 144 <ul> | |
| 145 <li><a href="hosting.html">Hosting</a></li> | |
| 146 <li><a href="external_extensions.html">Other Deployment Option
s</a></li> | |
| 147 </ul> | |
| 148 </li> | |
| 149 </ul> | |
| 150 </li> | |
| 151 <li><h2><a href="apps.html">Packaged Apps</a></h2></li> | |
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| 157 </ul> | |
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| 159 <li><h2>Reference</h2> | |
| 160 <ul> | |
| 161 <li>Formats | |
| 162 <ul> | |
| 163 <li><a href="manifest.html">Manifest Files</a></li> | |
| 164 <li><a href="match_patterns.html">Match Patterns</a></li> | |
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> | |
| 168 <li><a href="api_index.html">chrome.* APIs</a></li> | |
| 169 <li><a href="api_other.html">Other APIs</a></li> | |
| 170 </ul> | |
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| 172 <li><h2><a href="samples.html">Samples</a></h2></li> | |
| 173 <div class="line"> </div> | |
| 174 <li><h2>More</h2> | |
| 175 <ul> | |
| 176 <li><a href="http://code.google.com/chrome/webstore/docs/index.htm
l">Chrome Web Store</a></li> | |
| 177 <li><a href="http://code.google.com/chrome/apps/docs/developers_gu
ide.html">Hosted Apps</a></li> | |
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| 187 <div id="pageTitle"> | |
| 188 <h1 class="page_title">Packaged Apps</h1> | |
| 189 </div> | |
| 190 <!-- TABLE OF CONTENTS --> | |
| 191 <div id="toc"> | |
| 192 <h2>Contents</h2> | |
| 193 <ol> | |
| 194 <li> | |
| 195 <a href="#overview">Overview</a> | |
| 196 <ol> | |
| 197 </ol> | |
| 198 </li><li> | |
| 199 <a href="#manifest"> The manifest </a> | |
| 200 <ol> | |
| 201 </ol> | |
| 202 </li><li> | |
| 203 <a href="#next">What next?</a> | |
| 204 <ol> | |
| 205 </ol> | |
| 206 </li> | |
| 207 </ol> | |
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| 211 <!-- STATIC CONTENT PLACEHOLDER --> | |
| 212 <div id="static"><div id="pageData-name" class="pageData">Packaged Apps<
/div> | |
| 213 <div id="pageData-showTOC" class="pageData">true</div> | |
| 214 <p> | |
| 215 This page talks about packaged apps—how | |
| 216 you implement them, | |
| 217 and how they're different from | |
| 218 extensions and ordinary web apps. | |
| 219 </p> | |
| 220 <h2 id="overview">Overview</h2> | |
| 221 <p> | |
| 222 A packaged app is a web app | |
| 223 that's bundled into a <code>.crx</code> file | |
| 224 and can use Chrome extension features. | |
| 225 You build a packaged app just like you build an extension, | |
| 226 except that a packaged app can't include a | |
| 227 <a href="browserAction.html">browser action</a> or | |
| 228 <a href="pageAction.html">page action</a>. | |
| 229 Instead, a packaged app includes at least one HTML file | |
| 230 within its <code>.crx</code> file | |
| 231 that provides the app's user interface. | |
| 232 </p> | |
| 233 <p> | |
| 234 Packaged apps are a type of | |
| 235 <a href="http://code.google.com/chrome/apps/">installable web app</a>—a | |
| 236 web app that can be installed in Chrome. | |
| 237 The other type of installable web app is a | |
| 238 <a href="http://code.google.com/chrome/apps/docs/developers_guide.html">hosted a
pp</a>, | |
| 239 which is an ordinary web app with a bit of additional metadata. | |
| 240 </p> | |
| 241 <p> | |
| 242 If you're developing a web app for the Chrome Web Store, | |
| 243 you might want to use a packaged app | |
| 244 instead of a hosted app if any of the following are true: | |
| 245 </p> | |
| 246 <ul> | |
| 247 <li> | |
| 248 You don't want to run a service to host your app. | |
| 249 </li> | |
| 250 <li> | |
| 251 You want to build an app that works really well offline. | |
| 252 </li> | |
| 253 <li> | |
| 254 You want tighter integration with Chrome, | |
| 255 using the extension APIs. | |
| 256 </li> | |
| 257 </ul> | |
| 258 <p> | |
| 259 To learn more about | |
| 260 the differences between web apps and websites, | |
| 261 extensions and packaged apps, and packaged apps and hosted apps, | |
| 262 read these: | |
| 263 </p> | |
| 264 <ul> | |
| 265 <li> <a href="http://code.google.com/chrome/webstore/docs/choosing.html">Choos
ing an App Type</a> </li> | |
| 266 <li> <a href="http://code.google.com/chrome/apps/articles/thinking_in_web_apps
.html">Thinking in Web Apps</a> </li> | |
| 267 <li> <a href="http://code.google.com/chrome/webstore/articles/apps_vs_extensio
ns.html">Extensions, Packaged Apps, and Hosted Apps in the Chrome Web Store</a>
</li> | |
| 268 </ul> | |
| 269 <h2 id="manifest"> The manifest </h2> | |
| 270 <p> | |
| 271 A packaged app's manifest can have any field | |
| 272 that's available to extensions, | |
| 273 except for "browser_action" and "page_action". | |
| 274 In addition, a packaged app's manifest <b>must</b> | |
| 275 have an "app" field. | |
| 276 Here is a typical manifest for a packaged app: | |
| 277 </p> | |
| 278 <pre>{ | |
| 279 "name": "My Awesome Racing Game", | |
| 280 "description": "Enter a world where a Vanagon can beat a Maserati", | |
| 281 "version": "1", | |
| 282 <b>"app": { | |
| 283 "launch": { | |
| 284 "local_path": "main.html" | |
| 285 } | |
| 286 },</b> | |
| 287 "icons": { | |
| 288 "16": "icon_16.png", | |
| 289 "128": "icon_128.png" | |
| 290 } | |
| 291 } | |
| 292 </pre> | |
| 293 <p> | |
| 294 The "app" field has one subfield, "launch", | |
| 295 which specifies the <em>launch page</em> for the app—the | |
| 296 page (HTML file bundled into the <code>.crx</code> file) | |
| 297 that the browser goes to when the user clicks the app's icon | |
| 298 in the New Tab page. | |
| 299 The "launch" field can contain the following: | |
| 300 </p> | |
| 301 <dl> | |
| 302 <dt>local_path:</dt> | |
| 303 <dd><em>Required.</em> | |
| 304 Specifies the launch page | |
| 305 as a relative path referring to a file | |
| 306 in the <code>.crx</code> package. | |
| 307 </dd> | |
| 308 <dt>container:</dt> | |
| 309 <dd> The value "panel" makes the app appear | |
| 310 in an app panel. | |
| 311 By default, or when you specify "tab", | |
| 312 the app appears in a tab. | |
| 313 <!-- PENDING: In the overview | |
| 314 (or somewhere else before here) | |
| 315 we should show and define both app panels and tabs. | |
| 316 We should link to that place from here. --> | |
| 317 </dd> | |
| 318 <dt>height:</dt> | |
| 319 <dd> | |
| 320 If the container is set to "panel", | |
| 321 this integer specifies the height | |
| 322 of the panel in pixels. | |
| 323 For example, you might specify | |
| 324 <code>"height":400</code>. | |
| 325 Note that you don't use quotation marks in the value. | |
| 326 This field specifies the height of the area | |
| 327 to display contents in; | |
| 328 window decorations add a few more pixels to the total height. | |
| 329 If the container isn't a panel, this field is ignored. | |
| 330 </dd> | |
| 331 <dt>width:</dt> | |
| 332 <dd> | |
| 333 Similar to "height", | |
| 334 but specifies the width of the panel. | |
| 335 </dd> | |
| 336 </dl> | |
| 337 <p> | |
| 338 Packaged apps usually provide a 16x16 icon | |
| 339 to be used as the favicon for | |
| 340 tabs that contain app's pages. | |
| 341 They also should provide a 128x128 icon, | |
| 342 but not a 48x48 icon. | |
| 343 See the manifest documentation for the | |
| 344 <a href="manifest.html#icons">"icons" field</a> | |
| 345 for more information. | |
| 346 </p> | |
| 347 <p> | |
| 348 For further details on what a packaged app's manifest can contain, see the | |
| 349 <a href="manifest.html">manifest documentation</a>. | |
| 350 </p> | |
| 351 <h2 id="next">What next?</h2> | |
| 352 <p> | |
| 353 Read the <a href="overview.html">Overview</a> to learn | |
| 354 basic concepts about extensions. | |
| 355 </p> | |
| 356 <p class="backtotop"><a href="#top">Back to top</a></p> | |
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