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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.view.inputmethod;
     18 
     19 import android.os.Bundle;
     20 import android.os.Parcel;
     21 import android.os.Parcelable;
     22 import android.text.InputType;
     23 import android.text.TextUtils;
     24 import android.util.Printer;
     25 
     26 /**
     27  * An EditorInfo describes several attributes of a text editing object
     28  * that an input method is communicating with (typically an EditText), most
     29  * importantly the type of text content it contains.
     30  */
     31 public class EditorInfo implements InputType, Parcelable {
     32     /**
     33      * The content type of the text box, whose bits are defined by
     34      * {@link InputType}.
     35      *
     36      * @see InputType
     37      * @see #TYPE_MASK_CLASS
     38      * @see #TYPE_MASK_VARIATION
     39      * @see #TYPE_MASK_FLAGS
     40      */
     41     public int inputType = TYPE_NULL;
     42 
     43     /**
     44      * Set of bits in {@link #imeOptions} that provide alternative actions
     45      * associated with the "enter" key.  This both helps the IME provide
     46      * better feedback about what the enter key will do, and also allows it
     47      * to provide alternative mechanisms for providing that command.
     48      */
     49     public static final int IME_MASK_ACTION = 0x000000ff;
     50 
     51     /**
     52      * Bits of {@link #IME_MASK_ACTION}: no specific action has been
     53      * associated with this editor, let the editor come up with its own if
     54      * it can.
     55      */
     56     public static final int IME_ACTION_UNSPECIFIED = 0x00000000;
     57 
     58     /**
     59      * Bits of {@link #IME_MASK_ACTION}: there is no available action.
     60      */
     61     public static final int IME_ACTION_NONE = 0x00000001;
     62 
     63     /**
     64      * Bits of {@link #IME_MASK_ACTION}: the action key performs a "go"
     65      * operation to take the user to the target of the text they typed.
     66      * Typically used, for example, when entering a URL.
     67      */
     68     public static final int IME_ACTION_GO = 0x00000002;
     69 
     70     /**
     71      * Bits of {@link #IME_MASK_ACTION}: the action key performs a "search"
     72      * operation, taking the user to the results of searching for the text
     73      * the have typed (in whatever context is appropriate).
     74      */
     75     public static final int IME_ACTION_SEARCH = 0x00000003;
     76 
     77     /**
     78      * Bits of {@link #IME_MASK_ACTION}: the action key performs a "send"
     79      * operation, delivering the text to its target.  This is typically used
     80      * when composing a message.
     81      */
     82     public static final int IME_ACTION_SEND = 0x00000004;
     83 
     84     /**
     85      * Bits of {@link #IME_MASK_ACTION}: the action key performs a "next"
     86      * operation, taking the user to the next field that will accept text.
     87      */
     88     public static final int IME_ACTION_NEXT = 0x00000005;
     89 
     90     /**
     91      * Bits of {@link #IME_MASK_ACTION}: the action key performs a "done"
     92      * operation, typically meaning the IME will be closed.
     93      */
     94     public static final int IME_ACTION_DONE = 0x00000006;
     95 
     96     /**
     97      * Flag of {@link #imeOptions}: used to specify that the IME does not need
     98      * to show its extracted text UI.  For input methods that may be fullscreen,
     99      * often when in landscape mode, this allows them to be smaller and let part
    100      * of the application be shown behind.  Though there will likely be limited
    101      * access to the application available from the user, it can make the
    102      * experience of a (mostly) fullscreen IME less jarring.  Note that when
    103      * this flag is specified the IME may <em>not</em> be set up to be able
    104      * to display text, so it should only be used in situations where this is
    105      * not needed.
    106      */
    107     public static final int IME_FLAG_NO_EXTRACT_UI = 0x10000000;
    108 
    109     /**
    110      * Flag of {@link #imeOptions}: used in conjunction with
    111      * {@link #IME_MASK_ACTION}, this indicates that the action should not
    112      * be available as an accessory button when the input method is full-screen.
    113      * Note that by setting this flag, there can be cases where the action
    114      * is simply never available to the user.  Setting this generally means
    115      * that you think showing text being edited is more important than the
    116      * action you have supplied.
    117      */
    118     public static final int IME_FLAG_NO_ACCESSORY_ACTION = 0x20000000;
    119 
    120     /**
    121      * Flag of {@link #imeOptions}: used in conjunction with
    122      * {@link #IME_MASK_ACTION}, this indicates that the action should not
    123      * be available in-line as a replacement for "enter" key.  Typically this is
    124      * because the action has such a significant impact or is not recoverable
    125      * enough that accidentally hitting it should be avoided, such as sending
    126      * a message.  Note that {@link android.widget.TextView} will automatically set this
    127      * flag for you on multi-line text views.
    128      */
    129     public static final int IME_FLAG_NO_ENTER_ACTION = 0x40000000;
    130 
    131     /**
    132      * Flag of {@link #imeOptions}: used to request that the IME never go
    133      * into fullscreen mode.  Applications need to be aware that the flag is not
    134      * a guarantee, and not all IMEs will respect it.
    135      * @hide
    136      */
    137     public static final int IME_FLAG_NO_FULLSCREEN = 0x80000000;
    138 
    139     /**
    140      * Generic unspecified type for {@link #imeOptions}.
    141      */
    142     public static final int IME_NULL = 0x00000000;
    143 
    144     /**
    145      * Extended type information for the editor, to help the IME better
    146      * integrate with it.
    147      */
    148     public int imeOptions = IME_NULL;
    149 
    150     /**
    151      * A string supplying additional information options that are
    152      * private to a particular IME implementation.  The string must be
    153      * scoped to a package owned by the implementation, to ensure there are
    154      * no conflicts between implementations, but other than that you can put
    155      * whatever you want in it to communicate with the IME.  For example,
    156      * you could have a string that supplies an argument like
    157      * <code>"com.example.myapp.SpecialMode=3"</code>.  This field is can be
    158      * filled in from the {@link android.R.attr#privateImeOptions}
    159      * attribute of a TextView.
    160      */
    161     public String privateImeOptions = null;
    162 
    163     /**
    164      * In some cases an IME may be able to display an arbitrary label for
    165      * a command the user can perform, which you can specify here.  You can
    166      * not count on this being used.
    167      */
    168     public CharSequence actionLabel = null;
    169 
    170     /**
    171      * If {@link #actionLabel} has been given, this is the id for that command
    172      * when the user presses its button that is delivered back with
    173      * {@link InputConnection#performEditorAction(int)
    174      * InputConnection.performEditorAction()}.
    175      */
    176     public int actionId = 0;
    177 
    178     /**
    179      * The text offset of the start of the selection at the time editing
    180      * began; -1 if not known.
    181      */
    182     public int initialSelStart = -1;
    183 
    184     /**
    185      * The text offset of the end of the selection at the time editing
    186      * began; -1 if not known.
    187      */
    188     public int initialSelEnd = -1;
    189 
    190     /**
    191      * The capitalization mode of the first character being edited in the
    192      * text.  Values may be any combination of
    193      * {@link TextUtils#CAP_MODE_CHARACTERS TextUtils.CAP_MODE_CHARACTERS},
    194      * {@link TextUtils#CAP_MODE_WORDS TextUtils.CAP_MODE_WORDS}, and
    195      * {@link TextUtils#CAP_MODE_SENTENCES TextUtils.CAP_MODE_SENTENCES}, though
    196      * you should generally just take a non-zero value to mean start out in
    197      * caps mode.
    198      */
    199     public int initialCapsMode = 0;
    200 
    201     /**
    202      * The "hint" text of the text view, typically shown in-line when the
    203      * text is empty to tell the user what to enter.
    204      */
    205     public CharSequence hintText;
    206 
    207     /**
    208      * A label to show to the user describing the text they are writing.
    209      */
    210     public CharSequence label;
    211 
    212     /**
    213      * Name of the package that owns this editor.
    214      */
    215     public String packageName;
    216 
    217     /**
    218      * Identifier for the editor's field.  This is optional, and may be
    219      * 0.  By default it is filled in with the result of
    220      * {@link android.view.View#getId() View.getId()} on the View that
    221      * is being edited.
    222      */
    223     public int fieldId;
    224 
    225     /**
    226      * Additional name for the editor's field.  This can supply additional
    227      * name information for the field.  By default it is null.  The actual
    228      * contents have no meaning.
    229      */
    230     public String fieldName;
    231 
    232     /**
    233      * Any extra data to supply to the input method.  This is for extended
    234      * communication with specific input methods; the name fields in the
    235      * bundle should be scoped (such as "com.mydomain.im.SOME_FIELD") so
    236      * that they don't conflict with others.  This field is can be
    237      * filled in from the {@link android.R.attr#editorExtras}
    238      * attribute of a TextView.
    239      */
    240     public Bundle extras;
    241 
    242     /**
    243      * Write debug output of this object.
    244      */
    245     public void dump(Printer pw, String prefix) {
    246         pw.println(prefix + "inputType=0x" + Integer.toHexString(inputType)
    247                 + " imeOptions=0x" + Integer.toHexString(imeOptions)
    248                 + " privateImeOptions=" + privateImeOptions);
    249         pw.println(prefix + "actionLabel=" + actionLabel
    250                 + " actionId=" + actionId);
    251         pw.println(prefix + "initialSelStart=" + initialSelStart
    252                 + " initialSelEnd=" + initialSelEnd
    253                 + " initialCapsMode=0x"
    254                 + Integer.toHexString(initialCapsMode));
    255         pw.println(prefix + "hintText=" + hintText
    256                 + " label=" + label);
    257         pw.println(prefix + "packageName=" + packageName
    258                 + " fieldId=" + fieldId
    259                 + " fieldName=" + fieldName);
    260         pw.println(prefix + "extras=" + extras);
    261     }
    262 
    263     /**
    264      * Used to package this object into a {@link Parcel}.
    265      *
    266      * @param dest The {@link Parcel} to be written.
    267      * @param flags The flags used for parceling.
    268      */
    269     public void writeToParcel(Parcel dest, int flags) {
    270         dest.writeInt(inputType);
    271         dest.writeInt(imeOptions);
    272         dest.writeString(privateImeOptions);
    273         TextUtils.writeToParcel(actionLabel, dest, flags);
    274         dest.writeInt(actionId);
    275         dest.writeInt(initialSelStart);
    276         dest.writeInt(initialSelEnd);
    277         dest.writeInt(initialCapsMode);
    278         TextUtils.writeToParcel(hintText, dest, flags);
    279         TextUtils.writeToParcel(label, dest, flags);
    280         dest.writeString(packageName);
    281         dest.writeInt(fieldId);
    282         dest.writeString(fieldName);
    283         dest.writeBundle(extras);
    284     }
    285 
    286     /**
    287      * Used to make this class parcelable.
    288      */
    289     public static final Parcelable.Creator<EditorInfo> CREATOR = new Parcelable.Creator<EditorInfo>() {
    290         public EditorInfo createFromParcel(Parcel source) {
    291             EditorInfo res = new EditorInfo();
    292             res.inputType = source.readInt();
    293             res.imeOptions = source.readInt();
    294             res.privateImeOptions = source.readString();
    295             res.actionLabel = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source);
    296             res.actionId = source.readInt();
    297             res.initialSelStart = source.readInt();
    298             res.initialSelEnd = source.readInt();
    299             res.initialCapsMode = source.readInt();
    300             res.hintText = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source);
    301             res.label = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source);
    302             res.packageName = source.readString();
    303             res.fieldId = source.readInt();
    304             res.fieldName = source.readString();
    305             res.extras = source.readBundle();
    306             return res;
    307         }
    308 
    309         public EditorInfo[] newArray(int size) {
    310             return new EditorInfo[size];
    311         }
    312     };
    313 
    314     public int describeContents() {
    315         return 0;
    316     }
    317 
    318 }
    319