Merge pull request #279 from fefc/master

Added minimal browser support.

plugin.xml

@@ -62,4 +62,27 @@
             <merges target="" />
         </js-module>
     </platform>
+
+    <!-- browser -->
+    <platform name="browser">
+      <config-file parent="/*" target="config.xml">
+          <feature name="FileOpener2">
+              <param name="browser-package" value="FileOpener2"/>
+          </feature>
+      </config-file>
+
+      <!-- Required for browserify: we always link module below as there is conditional reference
+      to this module from requestFileSystem and resolveLocalFileSystemURI modules. -->
+      <js-module src="www/browser/isChrome.js" name="isChrome">
+          <runs />
+      </js-module>
+
+      <js-module src="src/browser/FileSaver.min.js" name="FileSaver">
+          <clobbers target="FileSaver"/>
+      </js-module>
+
+      <js-module src="src/browser/FileOpener2.js" name="FileOpener2Proxy">
+          <runs/>
+      </js-module>
+    </platform>
 </plugin>

src/browser/FileOpener2.js

@@ -0,0 +1,125 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2019 fefc - fefc.dev@gmail.com
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+const cacheDirectory = (require('./isChrome')()) ? 'filesystem:' + window.location.origin + '/temporary/' : 'file:///temporary/';
+const dataDirectory = (require('./isChrome')()) ? 'filesystem:' + window.location.origin + '/persistent/' : 'file:///persistent/';
+
+function open(successCallback, errorCallback, data) {
+  var fullFilePath = data[0];
+  //var contentType = data[1]; //Not needed in browser
+  //var openDialog = data[2]; //Not needed in browser
+
+  var dirPath = fullFilePath.substring(0, fullFilePath.lastIndexOf('/') + 1);
+  var fileName = fullFilePath.substring(fullFilePath.lastIndexOf('/') + 1, fullFilePath.length);
+  var fileSystemLocalPath = getLocalPathAndFileSystem(dirPath);
+
+  if (!fileSystemLocalPath.error) {
+    window.requestFileSystem(fileSystemLocalPath.fileSystem, 0, (fs) => {
+      readFile(fs.root, fileSystemLocalPath.localPath + fileName).then((blob) => {
+        FileSaver.saveAs(blob, fileName);
+        successCallback();
+      }).catch((error) => {
+        errorCallback(error);
+      });
+    }, (error) => {
+      errorCallback(error);
+    });
+  } else {
+    errorCallback('INVALID_PATH');
+  }
+}
+
+/**
+ *
+ * Gets the localPath according to the fileSystem (TEMPORARY or PERSISTENT).
+ *
+ * @param {String} Path to the file or directory to check
+ * @returns {Object} value with informations to requestFileSystem later
+ * @returns {string} value.localPath The localPath in relation with fileSystem.
+ * @returns {number} value.fileSystem the fileSystem (TEMPORARY or PERSISTENT).
+ * @returns {error} value.error if the path is not valid.
+ * @returns {message} value.message error message.
+ */
+function getLocalPathAndFileSystem(pathToCheck) {
+  let ret = {
+    localPath: '',
+    fileSystem: window.TEMPORARY
+  };
+
+  if (pathToCheck.startsWith(cacheDirectory)) {
+    ret.localPath = pathToCheck.replace(cacheDirectory, '');
+    ret.fileSystem = window.TEMPORARY;
+
+  } else if (pathToCheck.startsWith(dataDirectory)) {
+    ret.localPath = pathToCheck.replace(dataDirectory, '');
+    ret.fileSystem = window.PERSISTENT;
+
+  } else {
+    return {error: true, message: 'INVALID_PATH'};
+  }
+
+  if (!ret.localPath.endsWith('/')) ret.localPath += '/';
+
+  return ret;
+}
+
+/**
+ *
+ * Reads a file in the fileSystem as an DataURL.
+ *
+ * @param {String} Root is the root folder of the fileSystem.
+ * @param {String} Path is the file to be red.
+ * @returns {Promise} which resolves with an Object containing DataURL, rejects if something went wrong.
+ */
+function readFile(root, filePath) {
+  return new Promise((resolve, reject) => {
+    if (filePath.startsWith('/')) filePath = filePath.substring(1);
+
+    root.getFile(filePath, {}, (fileEntry) => {
+      fileEntry.file((file) => {
+        let reader = new FileReader();
+
+        reader.onload = function() {
+          resolve(reader.result);
+        };
+
+        reader.onerror = function() {
+          reject(reader.error);
+        }
+
+        reader.readAsDataURL(file);
+
+      }, (error) => {
+        reject(error);
+      });
+    }, (error) => {
+      reject(error);
+    });
+  });
+}
+
+module.exports = {
+  open: open
+};
+
+require( "cordova/exec/proxy" ).add( "FileOpener2", module.exports );

www/browser/isChrome.js

@@ -0,0 +1,26 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+module.exports = function () {
+    // window.webkitRequestFileSystem and window.webkitResolveLocalFileSystemURL are available only in Chrome and
+    // possibly a good flag to indicate that we're running in Chrome
+    return window.webkitRequestFileSystem && window.webkitResolveLocalFileSystemURL;
+};