kivy: add bump fee dialog

gui/kivy/uix/dialogs/bump_fee_dialog.py

@@ -0,0 +1,108 @@
+from kivy.app import App
+from kivy.factory import Factory
+from kivy.properties import ObjectProperty
+from kivy.lang import Builder
+
+from electrum.bitcoin import FEE_STEP, RECOMMENDED_FEE
+from electrum.util import fee_levels
+from electrum_gui.kivy.i18n import _
+
+Builder.load_string('''
+<BumpFeeDialog@Popup>
+    title: _('Bump fee')
+    size_hint: 0.8, 0.8
+    pos_hint: {'top':0.9}
+    BoxLayout:
+        orientation: 'vertical'
+
+        GridLayout:
+            height: self.minimum_height
+            size_hint_y: None
+            cols: 1
+            spacing: '10dp'
+            BoxLabel:
+                id: old_fee
+                text: _('Fee')
+                value: ''
+            BoxLabel:
+                id: new_fee
+                text: _('New Fee')
+                value: ''
+        Label:
+            id: tooltip
+            text: ''
+        Slider:
+            id: slider
+            range: 0, 4
+            step: 1
+            on_value: root.on_slider(self.value)
+        Widget:
+            size_hint: 1, 1
+        BoxLayout:
+            orientation: 'horizontal'
+            size_hint: 1, 0.5
+            Button:
+                text: 'Cancel'
+                size_hint: 0.5, None
+                height: '48dp'
+                on_release: root.dismiss()
+            Button:
+                text: 'OK'
+                size_hint: 0.5, None
+                height: '48dp'
+                on_release:
+                    root.dismiss()
+                    root.on_ok()
+''')
+
+class BumpFeeDialog(Factory.Popup):
+
+    def __init__(self, app, fee, size, callback):
+        Factory.Popup.__init__(self)
+        self.app = app
+        self.init_fee = fee
+        self.tx_size = size
+        self.callback = callback
+        self.config = app.electrum_config
+        self.dynfees = self.config.get('dynamic_fees', True) and self.app.network
+        self.ids.old_fee.value = self.app.format_amount_and_units(self.init_fee)
+        self.update_slider()
+        self.update_text()
+
+    def update_text(self):
+        value = int(self.ids.slider.value)
+        self.ids.new_fee.value = self.app.format_amount_and_units(self.get_fee())
+        if self.dynfees:
+            value = int(self.ids.slider.value)
+            self.ids.tooltip.text = fee_levels[value]
+
+    def update_slider(self):
+        slider = self.ids.slider
+        if self.dynfees:
+            slider.range = (0, 4)
+            slider.step = 1
+            slider.value = 0
+        else:
+            slider.range = (FEE_STEP, 2*RECOMMENDED_FEE)
+            slider.step = FEE_STEP
+            slider.value = self.init_fee*1.5
+
+    def get_fee(self):
+        value = int(self.ids.slider.value)
+        if self.dynfees:
+            dynfee = self.app.network.dynfee(value)
+            if dynfee:
+                return dynfee*self.tx_size/1000
+        else:
+            return value*self.tx_size/1000
+
+    def on_ok(self):
+        new_fee = self.get_fee()
+        self.callback(self.init_fee, new_fee)
+
+    def on_slider(self, value):
+        self.update_text()
+
+    def on_checkbox(self, b):
+        self.dynfees = b
+        self.update_text()

gui/kivy/uix/dialogs/fee_dialog.py

@@ -60,7 +60,7 @@ class FeeDialog(Factory.Popup):
         self.app = app
         self.config = config
         self.callback = callback
-        self.dynfees = self.config.get('dynamic_fees', False)
+        self.dynfees = self.config.get('dynamic_fees', True)
         self.ids.dynfees.active = self.dynfees
         self.update_slider()
         self.update_text()

gui/kivy/uix/dialogs/tx_dialog.py

@@ -90,7 +90,7 @@ Builder.load_string('''
                 size_hint: 0.5, None
                 height: '48dp'
                 text: _('Close')
-                on_release: popup.dismiss()
+                on_release: root.dismiss()
 ''')
 
 
@@ -129,8 +129,27 @@ class TxDialog(Factory.Popup):
         self.ids.output_list.update(self.tx.outputs())
 
     def do_rbf(self):
-        # not implemented
-        pass
+        from bump_fee_dialog import BumpFeeDialog
+        is_relevant, is_mine, v, fee = self.wallet.get_wallet_delta(self.tx)
+        size = self.tx.estimated_size()
+        d = BumpFeeDialog(self.app, fee, size, self._do_rbf)
+        d.open()
+
+    def _do_rbf(self, old_fee, new_fee):
+        if new_fee is None:
+            return
+        delta = new_fee - old_fee
+        if delta < 0:
+            self.app.show_error("fee too low")
+            return
+        try:
+            new_tx = self.wallet.bump_fee(self.tx, delta)
+        except BaseException as e:
+            self.app.show_error(e)
+            return
+        self.tx = new_tx
+        self.update()
+        self.do_sign()
 
     def do_sign(self):
         self.app.protected(_("Enter your PIN code in order to sign this transaction"), self._do_sign, ())