com.storageroomapp.client.field.ImageValue.java Source code

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Here is the source code for com.storageroomapp.client.field.ImageValue.java

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/*
Copyright 2013 Peter Laird
    
   Licensed 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.
*/
package com.storageroomapp.client.field;

import java.io.File;
import java.io.InputStream;
import java.util.List;

import org.json.simple.JSONObject;

import com.storageroomapp.client.util.FileUtil;
import com.storageroomapp.client.util.Http;
import com.storageroomapp.client.util.JsonSimpleUtil;

public class ImageValue extends GenericValue<String> {

    protected ImageField parentField = null;

    // Unfortunately, Image fields look entirely different on GET and POST/PUT
    protected boolean isObjectConfiguredForUpload = false;

    protected boolean isProcessing = false;
    protected List<ImageVersion> versions = null;

    public ImageValue() {
        this.parentField = null;
    }

    public ImageValue(ImageField parentField, String url) {
        this.parentField = parentField;
        this.innerValue = url;
        this.isObjectConfiguredForUpload = false;
    }

    // DESERIALIZATION

    /*
     * GET
     {
       "@type":"File",
       "@url":"http://files.storageroomapp.com/accounts/50eb30ec0f66024ee5001733/collection/50edda060f66020e0c000126/entries/50ede60e0f6602564800105b/fields/k50edda060f66020e0c000128/file.r"
     }
     */
    static public ImageValue parseJSONObject(ImageField parentField, JSONObject jsonObj) {
        if (jsonObj == null) {
            return null;
        }
        String url = JsonSimpleUtil.parseJsonStringValue(jsonObj, "@url");
        if (url == null) {
            return null;
        }

        ImageValue value = new ImageValue(parentField, url);
        value.isProcessing = JsonSimpleUtil.parseJsonBooleanValue(jsonObj, "@processing", false);

        JSONObject versionObject = (JSONObject) jsonObj.get("@versions");
        if (versionObject != null) {
            value.versions = ImageVersion.parseJSONListObject(versionObject);
        }
        return value;
    }

    // client closes stream
    public InputStream getImageAsStream() {
        if (isObjectConfiguredForUpload) {
            throw new IllegalStateException();
        }
        InputStream istream = Http.get(this.innerValue);
        return istream;
    }

    public boolean getImageAsFile(File fileToWrite) {
        if (isObjectConfiguredForUpload) {
            throw new IllegalStateException();
        }

        InputStream is = getImageAsStream();
        boolean success = FileUtil.writeStreamToFile(fileToWrite, is, true);

        return success;
    }

    // SERIALIZATION

    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(" imageUrl [");
        sb.append(innerValue);
        sb.append("] ");

        sb.append(" versions [");
        for (ImageVersion version : versions) {
            sb.append(version.toString());
        }
        sb.append("] ");

        return sb.toString();
    }

    public String toJSONString() {
        return "FIXME ImageFieldValue";
    }

    // GETTERS

    public String getUrl() {
        return innerValue;
    }

    public String getFileExtension() {
        if (isObjectConfiguredForUpload || (innerValue == null)) {
            return null;
        }
        return FileUtil.getDotExtension(innerValue);
    }

    public boolean isProcessing() {
        return isProcessing;
    }

    public List<ImageVersion> getVersions() {
        return versions;
    }

}