DB config dialogs

#30 (closed).16, #40 (closed)

Fig bugs in all db config dialogs to make sure they work correctly including:

• Checking ValueColors patterns according to plot type selected
• Giving ValueColors hint according to plot type selected
• Checking changes
• Get data queries
• Update queries
• Showing description for plot types in a nicer way
• Warning user about changes when click on close button.

sohstationviewer/conf/dbSettings.py

@@ -15,5 +15,30 @@ dbConf = {
     # key is last char of chan
     'seisLabel': {'1': 'NS', '2': 'EW', 'N': 'NS', 'E': 'EW', 'Z': 'V'},
     # +0.2:Y
-    'valColRE': re.compile('^\+?\-?[0-9]+\.?[0-9]?:[RYGMC]')     # noqa: W605
+    'multiColorDots': {
+        'pattern': re.compile('^\+?\-?[0-9]+\.?[0-9]?:[RYGMWC_]'),  # noqa: W605,E501
+        'instruction': (
+            "Colors include: RYGMCW\n"
+            "Ex: *:W  means everything with white color\n",
+            "Ex: -1:_|0:R|2.3:Y|+2.3:G  means:\n"
+            "   value <= -1  => not plot\n"
+            "   value <= 0   => plot with R color\n"
+            "   value <= 2.3 => plot with Y color\n"
+            "   value > 2.3  => plot with G color")},
+    'upDownDots': {
+        'pattern': re.compile("^[01]:[WRYGMC]$"),
+        'instruction': (
+            "Colors include: RYGMCW\n"
+            "Ex: 1:Y|0:R  means:\n"
+            "   value == 1 => plot above center line with Y color\n"
+            "   value == 0 => plot under center line with R color")},
+    'linesDots': {
+        'pattern': re.compile('^[LD]:[WRYGMC]$'),
+        'instruction': (
+            "Colors include: RYGMCW\n"
+            "Ex: L:G|D:W  means\n"
+            "   Lines are plotted with color G\n"
+            "   Dots are plotted with color W\n"
+            "If D is not defined, dots won't be displayed.\n"
+            "If L is not defined, lines will be plotted with color G")}
 }