Mercurial > libervia-web
annotate browser_side/file_tools.py @ 411:a0256b81d367
setup.py: update website (it's not http://www.salut-a-toi.org), and removed pyjamas framework which is not standard in pypi
author | Goffi <goffi@goffi.org> |
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date | Tue, 18 Mar 2014 19:18:16 +0100 |
parents | 462fc3359ee3 |
children | d52f529a6d42 |
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1 #!/usr/bin/python |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # Libervia: a Salut à Toi frontend |
340 | 5 # Copyright (C) 2011, 2012, 2013, 2014 Jérôme Poisson <goffi@goffi.org> |
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6 |
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7 # This program is free software: you can redistribute it and/or modify |
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8 # it under the terms of the GNU Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
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11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU Affero General Public License for more details. |
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16 |
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17 # You should have received a copy of the GNU Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 from pyjamas.ui.FileUpload import FileUpload |
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21 from pyjamas.ui.FormPanel import FormPanel |
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22 from pyjamas import Window |
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23 from pyjamas import DOM |
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24 from pyjamas.ui.VerticalPanel import VerticalPanel |
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25 from pyjamas.ui.HTML import HTML |
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26 from pyjamas.ui.HorizontalPanel import HorizontalPanel |
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27 from pyjamas.ui.Button import Button |
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28 from pyjamas.ui.Label import Label |
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29 |
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30 |
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31 class FilterFileUpload(FileUpload): |
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32 |
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33 def __init__(self, name, max_size, types=None): |
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34 """ |
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35 @param name: the input element name and id |
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36 @param max_size: maximum file size in MB |
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37 @param types: allowed types as a list of couples (x, y, z): |
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38 - x: MIME content type e.g. "audio/ogg" |
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39 - y: file extension e.g. "*.ogg" |
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40 - z: description for the user e.g. "Ogg Vorbis Audio" |
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41 If types is None, all file format are accepted |
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42 """ |
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43 FileUpload.__init__(self) |
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44 self.setName(name) |
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45 while DOM.getElementById(name): |
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46 name = "%s_" % name |
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47 self.setID(name) |
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48 self._id = name |
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49 self.max_size = max_size |
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50 self.types = types |
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51 |
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52 def getFileInfo(self): |
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53 from __pyjamas__ import JS |
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54 JS("var file = top.document.getElementById(this._id).files[0]; return [file.size, file.type]") |
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55 |
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56 def check(self): |
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57 if self.getFilename() == "": |
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58 return False |
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59 (size, filetype) = self.getFileInfo() |
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60 if self.types and filetype not in [x for (x, y, z) in self.types]: |
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61 types = [] |
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62 for type_ in ["- %s (%s)" % (z, y) for (x, y, z) in self.types]: |
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63 if type_ not in types: |
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64 types.append(type_) |
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65 Window.alert('This file type is not accepted.\nAccepted file types are:\n\n%s' % "\n".join(types)) |
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66 return False |
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67 if size > self.max_size * pow(2, 20): |
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68 Window.alert('This file is too big!\nMaximum file size: %d MB.' % self.max_size) |
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69 return False |
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70 return True |
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71 |
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72 |
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73 class FileUploadPanel(FormPanel): |
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74 |
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75 def __init__(self, action_url, input_id, max_size, texts=None, close_cb=None): |
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76 """Build a form panel to upload a file. |
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77 @param action_url: the form action URL |
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78 @param input_id: the input element name and id |
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79 @param max_size: maximum file size in MB |
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80 @param texts: a dict to ovewrite the default textual values |
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81 @param close_cb: the close button callback method |
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82 """ |
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83 FormPanel.__init__(self) |
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84 self.texts = {'ok_button': 'Upload file', |
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85 'cancel_button': 'Cancel', |
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86 'body': 'Please select a file.', |
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87 'submitting': '<strong>Submitting, please wait...</strong>', |
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88 'errback': "Your file has been rejected...", |
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89 'body_errback': 'Please select another file.', |
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90 'callback': "Your file has been accepted!"} |
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91 if isinstance(texts, dict): |
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92 self.texts.update(texts) |
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93 self.close_cb = close_cb |
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94 self.setEncoding(FormPanel.ENCODING_MULTIPART) |
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95 self.setMethod(FormPanel.METHOD_POST) |
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96 self.setAction(action_url) |
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97 self.vPanel = VerticalPanel() |
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98 self.message = HTML(self.texts['body']) |
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99 self.vPanel.add(self.message) |
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100 |
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101 hPanel = HorizontalPanel() |
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102 hPanel.setSpacing(5) |
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103 hPanel.setStyleName('marginAuto') |
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104 self.file_upload = FilterFileUpload(input_id, max_size) |
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105 self.vPanel.add(self.file_upload) |
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106 |
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107 self.upload_btn = Button(self.texts['ok_button'], getattr(self, "onSubmitBtnClick")) |
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108 hPanel.add(self.upload_btn) |
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109 hPanel.add(Button(self.texts['cancel_button'], getattr(self, "onCloseBtnClick"))) |
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110 |
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111 self.status = Label() |
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112 hPanel.add(self.status) |
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113 |
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114 self.vPanel.add(hPanel) |
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115 |
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116 self.add(self.vPanel) |
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117 self.addFormHandler(self) |
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118 |
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119 def setCloseCb(self, close_cb): |
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120 self.close_cb = close_cb |
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121 |
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122 def onCloseBtnClick(self): |
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123 if self.close_cb: |
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124 self.close_cb() |
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125 else: |
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126 print ("WARNING: no close method defined") |
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127 |
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128 def onSubmitBtnClick(self): |
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129 if not self.file_upload.check(): |
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130 return |
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131 self.message.setHTML(self.texts['submitting']) |
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132 self.upload_btn.setEnabled(False) |
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133 self.submit() |
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134 |
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135 def onSubmit(self, event): |
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136 pass |
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137 |
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138 def onSubmitComplete(self, event): |
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139 result = event.getResults() |
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140 if result != "OK": |
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141 Window.alert(self.texts['errback']) |
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142 self.message.setHTML(self.texts['body_errback']) |
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143 self.upload_btn.setEnabled(True) |
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144 else: |
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145 Window.alert(self.texts['callback']) |
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146 self.close_cb() |