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import ast
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import json
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from itertools import chain
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from django import forms
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from django.utils.safestring import mark_safe
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from django.utils.html import conditional_escape
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class SpectralWidget(forms.widgets.TextInput):
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def render(self, label, value, attrs=None):
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disabled = 'disabled' if attrs.get('disabled', False) else ''
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name = attrs.get('name', label)
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if '[' in value:
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if value[len(value)-1] == ",":
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value = ast.literal_eval(value)
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else:
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value = value + ","
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value = ast.literal_eval(value)
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codes = value
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if not isinstance(value, list):
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text=''
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#lista = []
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#if len(value) > 1:
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for val in value:
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text = text+str(val)+','
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#lista.append(val)
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codes=text
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else:
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codes=''
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html = '''<textarea rows="5" {0} class="form-control" id="id_{1}" name="{2}" style="white-space:nowrap; overflow:scroll;">{3}</textarea>
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<input type="text" class="col-md-1 col-no-padding" id="num1" value=0>
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<input type="text" class="col-md-1 col-no-padding" id="num2" value=0>
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<button type="button" class="button" id="add_spectral_button"> Add </button>
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<button type="button" class="button" id="delete_spectral_button"> Delete </button>
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<button type="button" class="button pull-right" id="cross_spectral_button"> Cross </button>
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<button type="button" class="button pull-right" id="self_spectral_button"> Self </button>
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<button type="button" class="button pull-right" id="all_spectral_button"> All </button>
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'''.format(disabled, label, name, codes)
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script = '''
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<script type="text/javascript">
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$(document).ready(function () {{
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var spectral_number1 = $("#num1").val();
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var spectral_number2 = $("#num2").val();
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$("#all_spectral_button").click(function(){{
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var sequence1 = selfSpectral()
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var sequence2 = crossSpectral()
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$("#id_spectral").val(sequence1+sequence2)
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updateSpectralNumber()
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}});
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$("#add_spectral_button").click(function(){{
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var spectral_comb = $("#id_spectral").val();
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var spectral_number1 = $("#num1").val();
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var spectral_number2 = $("#num2").val();
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var str = spectral_number1+", "+spectral_number2;
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//not to duplicate
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var n = spectral_comb.search(str);
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if (n==-1){
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$("#id_spectral").val(spectral_comb+"["+$("#num1").val()+", "+$("#num2").val()+"],")
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}
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updateSpectralNumber()
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}});
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$("#self_spectral_button").click(function(){{
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var sequence = selfSpectral()
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$("#id_spectral").val(sequence)
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updateSpectralNumber()
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}});
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$("#cross_spectral_button").click(function(){{
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var sequence = crossSpectral()
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$("#id_spectral").val(sequence)
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updateSpectralNumber()
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}});
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function selfSpectral() {
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var channels = $("#id_channels").val();
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var n = (channels.length)-1;
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var num = parseInt(channels[n]);
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sequence = ""
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for (i = 0; i < num; i++) {
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sequence = sequence + "[" + i.toString() + ", " + i.toString() + "],"
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}
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return sequence
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}
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function crossSpectral() {
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var channels = $("#id_channels").val();
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var n = (channels.length)-1;
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var num = parseInt(channels[n]);
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sequence = ""
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for (i = 0; i < num; i++) {
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for (j = i+1; j < num; j++) {
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sequence = sequence + "[" + i.toString() + ", " + j.toString() + "],"
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}
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}
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return sequence
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}
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function updateSpectralNumber(){
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var spectral_comb = $("#id_spectral").val();
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var num = spectral_comb.length;
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var cont = 0
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for (i = 0; i < num; i++) {
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if (spectral_comb[i] == "]"){
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cont = cont + 1
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}
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}
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$("#id_spectral_number").val(cont)
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}
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$("#delete_spectral_button").click(function(){{
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var spectral_comb = $("#id_spectral").val();
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var spectral_number1 = $("#num1").val();
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var spectral_number2 = $("#num2").val();
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var str = spectral_number1+", "+spectral_number2;
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var n = spectral_comb.search(str);
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if (n==-1){
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}
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else {
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n= spectral_comb.length;
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if (n<8){
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var tuple = "["+$("#num1").val()+", "+$("#num2").val()+"],"
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var txt = spectral_comb.replace(tuple,'');
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}
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else {
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var tuple = ",["+$("#num1").val()+", "+$("#num2").val()+"]"
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var txt = spectral_comb.replace(tuple,'');
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}
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$("#id_spectral").val(txt)
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var tuple = "["+$("#num1").val()+", "+$("#num2").val()+"],"
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var txt = spectral_comb.replace(tuple,'');
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$("#id_spectral").val(txt)
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}
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updateSpectralNumber()
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}});
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}});
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</script>
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'''
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return mark_safe(html+script)
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