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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 package org.chromium.content.browser.input; | |
6 | |
7 import android.text.TextUtils; | |
8 | |
9 import java.util.Locale; | |
10 | |
11 /** | |
12 * An immutable class to contain text, selection range, composition range, and w hether | |
13 * it's single line or multiple lines that are being edited. | |
14 */ | |
15 public class TextInputState { | |
16 private final CharSequence mText; | |
17 private final Range mSelection; | |
18 private final Range mComposition; | |
19 private final boolean mSingleLine; | |
20 private final boolean mFromIme; | |
21 | |
22 public TextInputState(CharSequence text, Range selection, Range composition, | |
23 boolean singleLine, boolean fromIme) { | |
24 selection.clamp(0, text.length()); | |
25 if (composition.start() != -1 || composition.end() != -1) { | |
26 composition.clamp(0, text.length()); | |
27 } | |
28 mText = text; | |
29 mSelection = selection; | |
30 mComposition = composition; | |
31 mSingleLine = singleLine; | |
32 mFromIme = fromIme; | |
33 } | |
34 | |
35 public CharSequence text() { | |
36 return mText; | |
37 } | |
38 | |
39 public Range selection() { | |
40 return mSelection; | |
41 } | |
42 | |
43 public Range composition() { | |
44 return mComposition; | |
45 } | |
46 | |
47 public boolean singleLine() { | |
48 return mSingleLine; | |
49 } | |
50 | |
51 public boolean fromIme() { | |
52 return mFromIme; | |
53 } | |
54 | |
55 public CharSequence getSelectedText() { | |
56 return TextUtils.substring(mText, mSelection.start(), mSelection.end()); | |
57 } | |
58 | |
59 public CharSequence getTextAfterSelection(int maxChars) { | |
60 return TextUtils.substring( | |
61 mText, mSelection.end(), Math.min(mText.length(), mSelection.end () + maxChars)); | |
62 } | |
63 | |
64 public CharSequence getTextBeforeSelection(int maxChars) { | |
65 return TextUtils.substring( | |
66 mText, Math.max(0, mSelection.start() - maxChars), mSelection.st art()); | |
67 } | |
68 | |
69 @Override | |
70 public boolean equals(Object o) { | |
71 if (!(o instanceof TextInputState)) return false; | |
72 TextInputState t = (TextInputState) o; | |
73 if (t == this) return true; | |
74 return TextUtils.equals(mText, t.mText) && mSelection.equals(t.mSelectio n) | |
75 && mComposition.equals(t.mComposition) && mSingleLine == t.mSing leLine | |
76 && mFromIme == t.mFromIme; | |
77 } | |
78 | |
79 @Override | |
80 public int hashCode() { | |
81 return mText.hashCode() * 7 + mSelection.hashCode() * 11 + mComposition. hashCode() * 13 | |
82 + (mSingleLine ? 19 : 0) + (mFromIme ? 23 : 0); | |
83 } | |
84 | |
85 @SuppressWarnings("unused") | |
86 public boolean shouldUnblock() { | |
87 return false; | |
88 } | |
89 | |
90 @Override | |
91 public String toString() { | |
92 return String.format(Locale.US, "TextInputState {[%s] SEL%s COM%s %s %s} ", | |
93 mText, mSelection, mComposition, mSingleLine ? "SIN" : "MUL", | |
94 mFromIme ? "fromIME" : "NOTfromIME"); | |
95 } | |
96 | |
97 static class Unblocker extends TextInputState { | |
Ted C
2016/02/02 23:14:43
shouldn't this just be a
static final TextInputS
Changwan Ryu
2016/02/11 16:21:08
Good point. Moved to ThreadedInputConnection and m
| |
98 public Unblocker() { | |
99 super("", new Range(0, 0), new Range(-1, -1), false, true /* fromIme */); | |
100 } | |
101 | |
102 @Override | |
103 public boolean shouldUnblock() { | |
104 return true; | |
105 } | |
106 } | |
107 } | |
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