jFS3/Example/SimpleExplorer.html at main · MS702/jFS3 · GitHub

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<!DOCTYPE html>
<html>
  <header>
    <title>SimpleExplorer (Example)</title>
    <script src="../jFS3.js"></script>
    <script>
    // init Filesystem
    const fs = new jFS3(8096);

    // helper to download-file from path
    function downloadFile(name) {
      // returns directly a file-object
      fs.readFile(name).then((file) => {
        const url = URL.createObjectURL(file);
        const a = document.createElement("a");
        document.body.appendChild(a);
        a.href = url;
        document.body.removeChild(a);
        a.download = file.name;
        a.click();
        URL.revokeObjectURL(url);
      });
    }

    //update file-list
    function updateList()
    {
      const content = document.getElementById("content");
      content.innerHTML = "";

      // check if current-path is not root
      if (fs.getcwd() != "/")
      {
        // if not root, then show ".." to go upper in FS.
        const entry = document.createElement("div");
        entry.id = "upper";
        entry.innerText = "..";
        entry.onclick = () => fs.chdir("..");
        content.appendChild(entry);
      }

      //iterate all elements of the current working directory
      for (const name of fs.listdir())
      {
        // create entry containing delete button and name
        const entry = document.createElement("div");
        // create delete button
        const delete_button = document.createElement("button");
        delete_button.innerText = "X";
        delete_button.onclick = () => {
          // check type of entry and choose delete methode
          if (fs.isfile(name)) fs.rm(name);
          else if (fs.isdir(name)) fs.rmdir(name);
        }
        entry.appendChild(delete_button);

        // read meta-information of file.
        const meta = fs.metainfo(name);

        // create title
        const title = document.createElement("p");

        // create localtime from create date of meta-information.
        const cdate = new Date(meta.cdate).toLocaleString();
        // create localtime from modify date of meta-information.
        const mdate = new Date(meta.mdate).toLocaleString();

        // checks if current element is a dir
        if (fs.isdir(name))
        {
          // set title to folder name with create and modify date
          title.innerText = name + " <dir> [C: "+ cdate + ", M: "+mdate+"]";
          // change path to this dir if clicked
          title.onclick = () => fs.chdir(name);
        }
        // checks if current element is a file
        if (fs.isfile(name))
        {
          // set title to file name with file-size, create and modify date
          title.innerText = name + " ( " + meta.size + "B ) [C: "+ cdate + ", M: "+mdate+"]";
          // download this file if clicked
          title.onclick = () => downloadFile(name);
        }
        entry.appendChild(title);
        content.appendChild(entry);
      }

      // generate quota information
      fs.quota().then((data) => {
        document.getElementById("quota_text").innerText = "LogicalSize: " + data.logicalSize + " Bytes"
        + ", PhysicalSize: "+ data.estimatedPhysicalSize + " Bytes"
        + ", Saving: " + Math.round((1-data.usageRatio)*1000)/10 + "%"
        + ", LogicalBlocks: " + data.referencedBlocks
        + ", PhysicalBlocks (Unique): " + data.uniqueBlocks;
      });
    }

    // Add file from file picker, write it directly to the FS.
    function addFile()
    {
      for (const file of document.getElementById("new_file").files)
      {
        // write file-object directly to FS.
        fs.writeFile(fs.split(file.name)[1], file);
      }
    }
    // create new folder
    function newFolder()
    {
      //creates new folder, with fallback (default) "new folder" as name
      fs.mkdir(prompt("New folder") || "new folder");
    }
    // Register events to update the file list on FS changes.
    for (const event of ["change-path", "create-file", "change-file", "delete-file",
    "create-dir", "delete-dir"])
    {
      // if event gets triggered updates the file list.
      fs.on(event, (path) => updateList());
    }

    // updates the path entry to the new path
    fs.on("change-path", (path) => document.getElementById("path").value = path);
    // if current folder gets deleted, go one folder up
    fs.on("delete-dir", (path) => {
      if (path === fs.getcwd())
      {
        fs.chdir("..");
      }
    });

    //init UI wenn FS is ready
    fs.onready(() => {
      updateList();
      document.getElementById("path").value = fs.getcwd();
    });
    </script>

    <style>
    * {
      margin: 0px;
      padding: 0px;
      overflow: hidden;
    }

    #path {
      background-color: #f2f2f2;
      width: 100%;
      height: 50px;
      font-size: 25px;
      padding-left: 5px;
      border: 0px;
    }
    #path:hover {
      background-color: #dbdbdb;
    }

    #menu {
      display: flex;
      background-color: #696969;
      height: 50px;
    }

    #menu > * {
      background-color: #696969;
      height: 100%;
      color: white;
      border: 0px;
      margin-right: 5px;
    }
    #menu > button:hover {
      background-color: #525252;
      cursor: pointer;
    }

    #content {
      position: fixed;
      background-color: #dbdbdb;
      top:100px;
      bottom: 25px;
      left: 0px;
      right: 0px;
      overflow-y: auto;
    }
    #content > div {
      display: flex;
      width: calc(100% - 10px);
      min-height: 50px;
      margin: 5px;
      background-color: #dbdbdb;
      font-size: 25px;
    }
    #content > div:hover {
      background-color: #c4c4c4;
    }
    #content > div p {
      font-size: 25px;
      width: calc(100% - 50px);
      height: 100%;
      line-height: 50px;
      cursor: default;
    }
    #content > div button {
      width: 40px;
      height: 40px;
      color: white;
      background-color: #d62a2a;
      border-radius: 15px;
      border: 0px;
      margin: 5px;
    }
    #content > div button:hover {
      background-color: #ec1414;
      cursor: pointer;
    }
    #footer {
      position: fixed;
      height: 25px;
      bottom: 0px;
      left:0px;
      right: 0px;
    }

    #footer > * {
      display: inline;
      margin-left: 5px;
    }
    </style>
  </header>
  <body>
    <input id="path" onchange="fs.chdir(this.value)"></input>
    <div id="menu">
      <button onclick="newFolder()">New folder</button>
      <input type="file" id="new_file" onchange="addFile()" multiple/>
    </div>
    <div id="content"></div>
    <div id="footer">
      <p id="quota_text"></p>
    </div>
  </body>
</html>